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Online since: February 2011
Authors: Jun Gao, Shu Xia Lin, Zhen Ming Yue
Its chemical composition and mechanical properties are shown in table 1.
Table 1 chemical composition and mechanical properties of AZ31B sheet Mainly composition[%] Mechanical properties Al Mn Zn Si Be Tensile strength [MPa] Yield shrength [MPa] Elongation [%] Hv[0.5kg] 3.19 0.334 0.81 0.02 0.01 300 220 18 75±5.0 During the research process,two types of specimens were introduced.
Experiment results and analysis: determination of influencing factors During the drawing process of AZ31B sheet, there are a lot of influencing factors, which include the drawing force, blanking force, die radius, clearance, speed, temperature, etc., and all these factors are interacted with each other.
In this paper, some minor influencing factors were chosen as definite values according to some previous testing processes, only the major influencing factors were discussed.
Ebert, Magnesium properties-application-potential, Master.
Table 1 chemical composition and mechanical properties of AZ31B sheet Mainly composition[%] Mechanical properties Al Mn Zn Si Be Tensile strength [MPa] Yield shrength [MPa] Elongation [%] Hv[0.5kg] 3.19 0.334 0.81 0.02 0.01 300 220 18 75±5.0 During the research process,two types of specimens were introduced.
Experiment results and analysis: determination of influencing factors During the drawing process of AZ31B sheet, there are a lot of influencing factors, which include the drawing force, blanking force, die radius, clearance, speed, temperature, etc., and all these factors are interacted with each other.
In this paper, some minor influencing factors were chosen as definite values according to some previous testing processes, only the major influencing factors were discussed.
Ebert, Magnesium properties-application-potential, Master.
Online since: November 2021
Authors: Yu Han, Ruo Yu Xu, Yu Qi Huang, Xue Jun Wang, Ming Yu Zhou
The adhesion between the carbon fibre reinforced copper matrix composite material and
the coating is of particular importance for the mechanical and functional properties of the resulting
system, and also for its handling and for the lifetime of the final product.
Both, processes and materials affect interface properties and - in some cases - the microstructure of the base material near the interface.
During the process flow, the materials are exposed to the action of various external factors, mechanical, thermal, or electrochemical [4].
Frequently, one factor is dominating among other factors affecting theageing of the materials and the degradation and eventually the failure of the part of product.
[11] Fanyong Zhang, Jining He, Kai Chen, Yanfang Qin, Chao Li, and Fuxing Yin, "Microstructure evolution and mechanical properties of TiCN-Cr nano/micro composite coatings prepared by reactive plasma spraying", Applied Surface Science, vol. 427, pp. 905-914, Jan. 2018
Both, processes and materials affect interface properties and - in some cases - the microstructure of the base material near the interface.
During the process flow, the materials are exposed to the action of various external factors, mechanical, thermal, or electrochemical [4].
Frequently, one factor is dominating among other factors affecting theageing of the materials and the degradation and eventually the failure of the part of product.
[11] Fanyong Zhang, Jining He, Kai Chen, Yanfang Qin, Chao Li, and Fuxing Yin, "Microstructure evolution and mechanical properties of TiCN-Cr nano/micro composite coatings prepared by reactive plasma spraying", Applied Surface Science, vol. 427, pp. 905-914, Jan. 2018
Online since: July 2013
Authors: Takehiro Konoike, Masahiko Kimura, Hirohisa Kimachi, Hiroshi Takagi, Chiharu Sakaki, Motonori Nakamura, Kaori Shirakihara, Kesisuke Tanaka
A piezoelectric actuator generates large displacements under a continual-driving condition; it is thus important to improve not only the piezoelectric properties but also the mechanical and fatigue properties of its piezoelectric ceramics.
Table 1 Piezoelectric and mechanical properties of PZT-A and PZT-B To estimate the domain contribution on the fatigue life, fatigue tests on BST ceramics (with Curie temperature of 60°C) in both ferroelectric phase and paraelectric phase were carried out.
The above-described results indicate that the coercive field of piezoelectric properties strongly affects the fatigue life of piezoelectric ceramics, because the strength of the coercive field shows as difficulty of non-180° domain switching.
The piezoelectric and mechanical properties of two PZT ceramics are listed in Table 1.
Ec of PZT-A is 1.5 times higher than that of PZT-B in spite of the similar grain size, piezoelectric properties (ε33T/ε0, k31, and d31), and mechanical properties (Young’s modulus and bending strength) of the ceramics.
Table 1 Piezoelectric and mechanical properties of PZT-A and PZT-B To estimate the domain contribution on the fatigue life, fatigue tests on BST ceramics (with Curie temperature of 60°C) in both ferroelectric phase and paraelectric phase were carried out.
The above-described results indicate that the coercive field of piezoelectric properties strongly affects the fatigue life of piezoelectric ceramics, because the strength of the coercive field shows as difficulty of non-180° domain switching.
The piezoelectric and mechanical properties of two PZT ceramics are listed in Table 1.
Ec of PZT-A is 1.5 times higher than that of PZT-B in spite of the similar grain size, piezoelectric properties (ε33T/ε0, k31, and d31), and mechanical properties (Young’s modulus and bending strength) of the ceramics.
Online since: January 2005
Authors: Shi Fang Xiao, Yu Hu Wang
The uniaxial compressive mechanical properties of nanocrystalline Fe are simulated with
a molecular dynamics technique and the analytical embedded-atom method.
Introduction Affected by external loading condition and the friction between the apparatus and sample surface, the mechanical properties tests of metals are often made through tension method experimentally.
In the computer simulation, there is no loading stress limitation and can exclude all kinds of influence factors.
The model parameters are determined by fitting the physical properties of α-Fe, such as cohesive energies, vacancy formation energy, and elastic constants.
The abnormal mechanical properties are attributed to the high fraction of grain boundary atoms, and the plastic deformation is mostly carried out through atomic sliding on grain boundary and grain rotation.
Introduction Affected by external loading condition and the friction between the apparatus and sample surface, the mechanical properties tests of metals are often made through tension method experimentally.
In the computer simulation, there is no loading stress limitation and can exclude all kinds of influence factors.
The model parameters are determined by fitting the physical properties of α-Fe, such as cohesive energies, vacancy formation energy, and elastic constants.
The abnormal mechanical properties are attributed to the high fraction of grain boundary atoms, and the plastic deformation is mostly carried out through atomic sliding on grain boundary and grain rotation.
Online since: February 2008
Authors: Zheng Yi Jiang, Dong Bin Wei, Guo Dong Wang, Hai Bo Xie, Xianghua Liu
Wang
2,d
1
School of Mechanical, Materials and Methatronic Engineering, University of Wollongong,
Wollongong NSW 2522, Australia
2
The State Key Laboratory of Rolling and Automation, Northeastern University, Shenyang,
Liaoning 110004, PR China
a
hx899@uow.edu.au, b jiang@uow.edu.au, c dwei@uow.edu.au, d liuxh@mail.neu.edu.cn,
e
wanggd@mail.neu.edu.cn
Keywords: Temperature prediction, Annealing algorithm, Adaptive neural network, Hot strip mill.
Rolling temperature is an important factor affecting mechanical properties of hot rolled strip significantly.
Introduction Rolling temperature plays a critical role in mechanical properties of hot rolled strip, and higher precision control of coiling temperature is highly related with good material properties.
Control of temperature during cooling is essential for achieving desired mechanical and metallurgical properties of steel [1].
Rolling temperature is an important factor affecting mechanical properties of hot rolled strip significantly.
Introduction Rolling temperature plays a critical role in mechanical properties of hot rolled strip, and higher precision control of coiling temperature is highly related with good material properties.
Control of temperature during cooling is essential for achieving desired mechanical and metallurgical properties of steel [1].
Online since: September 2023
Authors: Meryem Taoufiki, Abderrahim Barroug, Ahmed Jouaiti, Driss Dafir, Hanae Chabba
The attainment of a high-quality product with specific and predicted mechanical properties is a crucial factor in the production process.
The mechanical properties of the material are also impacted by its atomic activity, which also affects the interatomic distance value. 2.1.
The bond lengths vary interdependently, with each atomic pair affecting the phase, but not to a statistically significant degree.
Camprubí, Mechanical properties at nano-level, (2011)
Kurz, Factors influencing mechanical properties, Introd. to Mater.
The mechanical properties of the material are also impacted by its atomic activity, which also affects the interatomic distance value. 2.1.
The bond lengths vary interdependently, with each atomic pair affecting the phase, but not to a statistically significant degree.
Camprubí, Mechanical properties at nano-level, (2011)
Kurz, Factors influencing mechanical properties, Introd. to Mater.
Online since: January 2010
Authors: Henryk Dyja, Grzegorz Stradomski, Z. Stradomski
Substantial differences - mainly in plasticity - were found based on statistical analysis
of hot rolled bars mechanical properties.
Material's grain size and its in homogeneity is the parameter particularly strongly affecting the value of energy of breaking as well as the nature of steel transition into brittle state.
Statistical analysis of mechanical properties for 465 random selected smooth bars made of S355 steel, 24÷60 mm in diameter, produced between January 2004 and May 2007, is presented in figure 1.
Bar charts of mechanical properties of 465 analysed products: a) Re, b) Rm, c) A5, d) Kv 2.
The optimal continuous cooling rate for finished products amounts to approximately 6,7°C/s, - The change of hypoeutectoid ferrite morphology into an idiomorphic form, obtained using bars cooling at the rate of approximately 6,7°C/s is the factor, which has a decisive influence on mechanical properties and in particular on plastic properties of S355 steel bars.
Material's grain size and its in homogeneity is the parameter particularly strongly affecting the value of energy of breaking as well as the nature of steel transition into brittle state.
Statistical analysis of mechanical properties for 465 random selected smooth bars made of S355 steel, 24÷60 mm in diameter, produced between January 2004 and May 2007, is presented in figure 1.
Bar charts of mechanical properties of 465 analysed products: a) Re, b) Rm, c) A5, d) Kv 2.
The optimal continuous cooling rate for finished products amounts to approximately 6,7°C/s, - The change of hypoeutectoid ferrite morphology into an idiomorphic form, obtained using bars cooling at the rate of approximately 6,7°C/s is the factor, which has a decisive influence on mechanical properties and in particular on plastic properties of S355 steel bars.
Online since: November 2013
Authors: Nai Heng Ma, Hao Wei Wang, Dong Chen, Yi Jie Zhang, Cong Zou
Tensile Properties of 15wt.
On the contrary, in our previous work[5], The mechanical properties of the composites with 5wt.% and 10wt.% TiB2 show remarkable improvement as the weight fraction of TiB2 increase.
Fig.3 Representative stress–strain curves of the 15wt.% TiB2/7055 composite and the matrix alloy Table 2 Mechanical properties of 7055 and 15wt.% TiB2/7055 composite material Elastic Modulus /GPa Yield strength /MPa Ultimate tensile strength /MPa Elongation /% 7055 72.6 698 724 10.2 15 wt. % TiB2/7055 87.6 622 641 1.3 This could be attributed to two factors.
It shows negative effect on the tensile properties.
Mechanical properties and microstructure of in situ TiB2-7055 composites, Chinese J of Aero. 19(2006): 66-70 [6] Tszeng, T.C.
On the contrary, in our previous work[5], The mechanical properties of the composites with 5wt.% and 10wt.% TiB2 show remarkable improvement as the weight fraction of TiB2 increase.
Fig.3 Representative stress–strain curves of the 15wt.% TiB2/7055 composite and the matrix alloy Table 2 Mechanical properties of 7055 and 15wt.% TiB2/7055 composite material Elastic Modulus /GPa Yield strength /MPa Ultimate tensile strength /MPa Elongation /% 7055 72.6 698 724 10.2 15 wt. % TiB2/7055 87.6 622 641 1.3 This could be attributed to two factors.
It shows negative effect on the tensile properties.
Mechanical properties and microstructure of in situ TiB2-7055 composites, Chinese J of Aero. 19(2006): 66-70 [6] Tszeng, T.C.
Online since: August 2007
Authors: Mao Sen Cao, Ning Xia, Qing Wen Ren
Thus, it
is concluded that the front section along anchor is the key region affecting the bonding mechanical
behavior between bolts and grout.
Corrosion may make surface properties of bolts change so as to lead to the bonding mechanical behavior inferior.
The bar used had a diameter of 12 mm, and its mechanical properties are shown in Table 1.
For the quantity of ultimate withdraw resistance, it exhibits three basic properties.
Corrosion on the front section leads to the greatest decrease of anchorage capacity of bolts; therefore, the front section along anchor is the key region affecting the bonding mechanical behavior between bolts and grout
Corrosion may make surface properties of bolts change so as to lead to the bonding mechanical behavior inferior.
The bar used had a diameter of 12 mm, and its mechanical properties are shown in Table 1.
For the quantity of ultimate withdraw resistance, it exhibits three basic properties.
Corrosion on the front section leads to the greatest decrease of anchorage capacity of bolts; therefore, the front section along anchor is the key region affecting the bonding mechanical behavior between bolts and grout
Online since: January 2013
Authors: Sung Mo Yang, Hyo Sun Yu, Hee Yong Kang, Kyung Jae Kim
Since the spot welding process was completed in a very short time and there were many factors affecting the generation of welding defects, it was difficult to control all experimental factors of welding.
Table 1 is chemical compositions and mechanical properties were also used in this experiment.
Table 1 The chemical compositions and mechanical properties of base metal [Fe bal. %] C Si Mn P S Ni Al 0.043 0.019 0.424 0.079 0.007 0.026 0.047 Tensile strength[MPa] Elongation[%] Young's modulus[GPa] Poisson's ratio 296.8 56 194 0.3 Table 2 The welding conditions Welding current[kA] Electrode force [N] Squeeze time [cycle] Welding time [cycle] Holding time [cycle] 8 2450 30 15 10 When stress was in the elastic range, and if the load frequency was high enough under thermal insulation conditions, relations such as equation(1) forms between the change in the amount and course of temperature change and principal stress change occurred for each
Fatigue quality index(FQI) was expressed by the ratio of maximum stress for standard stress as a severity factor to estimate stress concentrations existing under the circumstances of spot weldment, which received a dynamic load.
Yu: International Journal Korea Society of Mechanical Engineers Vol.13, No.12 (1999), p. 775-782
Table 1 is chemical compositions and mechanical properties were also used in this experiment.
Table 1 The chemical compositions and mechanical properties of base metal [Fe bal. %] C Si Mn P S Ni Al 0.043 0.019 0.424 0.079 0.007 0.026 0.047 Tensile strength[MPa] Elongation[%] Young's modulus[GPa] Poisson's ratio 296.8 56 194 0.3 Table 2 The welding conditions Welding current[kA] Electrode force [N] Squeeze time [cycle] Welding time [cycle] Holding time [cycle] 8 2450 30 15 10 When stress was in the elastic range, and if the load frequency was high enough under thermal insulation conditions, relations such as equation(1) forms between the change in the amount and course of temperature change and principal stress change occurred for each
Fatigue quality index(FQI) was expressed by the ratio of maximum stress for standard stress as a severity factor to estimate stress concentrations existing under the circumstances of spot weldment, which received a dynamic load.
Yu: International Journal Korea Society of Mechanical Engineers Vol.13, No.12 (1999), p. 775-782