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Online since: February 2013
Authors: Yong Yue Zhang, Chong Lin Jia, Qiang Fan, Qun Li, Ying Wang
            
                With cold rolling deformation between 12.5% and 60% for GH 536 superalloy strips, effect of deformation on the mechanical properties, texture formation and microstructure evolution have been investigated.
The results show that an increase of deformation will lead to an increase of mechanical properties.
Conclusions (1) Cold deformation plays a very important role on mechanical properties of GH536 superalloy strip.
Influence of deformation ratio, heat treatment system on as-cast microstructure of weld area, grain size and mechanical properties of GH536 welded tube, Journal of Iron and Steel Research. 15 (7) (2003) 433-437
Xie, Y.Zhao, Studies of mechanical properties and microstructures of argon-shielded arc welding joint of GH536 superalloy, Journal of Dalian Jiaotong University. 31 (5) (2010) 47-49
            
    The results show that an increase of deformation will lead to an increase of mechanical properties.
Conclusions (1) Cold deformation plays a very important role on mechanical properties of GH536 superalloy strip.
Influence of deformation ratio, heat treatment system on as-cast microstructure of weld area, grain size and mechanical properties of GH536 welded tube, Journal of Iron and Steel Research. 15 (7) (2003) 433-437
Xie, Y.Zhao, Studies of mechanical properties and microstructures of argon-shielded arc welding joint of GH536 superalloy, Journal of Dalian Jiaotong University. 31 (5) (2010) 47-49
Online since: August 2016
Authors: Kwan Ho Seo, Dong Won Lee, Gi Hong Kim, Do Young Kim, Dong Gug Kang, Gi Myeong Nam
            
                Rubber materials are required to have some specific mechanical properties depending on their operating conditions.
The aging properties of the specimens were examined by measuring their mechanical properties.
The oil resistance properties of the specimens were examined by measuring their mechanical properties and degree of volume change.
Cure properties of NBR compounds of various ACN contents by rheometer at 175°C NBR-1 NBR-2 NBR-3 NBR-4 NBR-5 NBR-6 T2 (sec) 58 61 56 57 56 59 T90 (sec) 97 113 120 118 137 156 Mechanical properties and oil resistance Fig. 1, 2, 3 shows the mechanical properties of the NBR compounds after heat aging or immersion in ASTM#1, IRM903 oil for 72 hours at 100°C.
A major factor of the influence of oil resistance properties is polymer molecular structure and cross-linking.
            
    The aging properties of the specimens were examined by measuring their mechanical properties.
The oil resistance properties of the specimens were examined by measuring their mechanical properties and degree of volume change.
Cure properties of NBR compounds of various ACN contents by rheometer at 175°C NBR-1 NBR-2 NBR-3 NBR-4 NBR-5 NBR-6 T2 (sec) 58 61 56 57 56 59 T90 (sec) 97 113 120 118 137 156 Mechanical properties and oil resistance Fig. 1, 2, 3 shows the mechanical properties of the NBR compounds after heat aging or immersion in ASTM#1, IRM903 oil for 72 hours at 100°C.
A major factor of the influence of oil resistance properties is polymer molecular structure and cross-linking.
Online since: October 2011
Authors: Sharon Kao-Walter, Etienne Mfoumou, Maurice Ndikontar
            
                The properties needed to be studied, not only from the mechanical point of view but also from that of sustainability.
Mechanical properties are also influenced by the composition, structure and number of defects in a fibre.
The factors that affect elongation of a fibre can be attributed to the orientation, high degree of crystallisation and the angle of the micro fibrils with respect to the axis of the fibre [5].
To prepare the specimen, these coconut husks were retted carefully to obtain the fibre for analysis for its mechanical properties.
According to the tensile tests, the mechanical properties of coconut fibre are rather close to those of less ductile polymer.
            
    Mechanical properties are also influenced by the composition, structure and number of defects in a fibre.
The factors that affect elongation of a fibre can be attributed to the orientation, high degree of crystallisation and the angle of the micro fibrils with respect to the axis of the fibre [5].
To prepare the specimen, these coconut husks were retted carefully to obtain the fibre for analysis for its mechanical properties.
According to the tensile tests, the mechanical properties of coconut fibre are rather close to those of less ductile polymer.
Online since: February 2013
Authors: An Ming Li
            
                Microstructure and mechanical properties of subcritical quenched 65Mn steel are investigated when different pretreatment is used.
The mechanical properties of 65Mn steel can be improved by austenite inverse transformation subcritical quenching.
The effect of pretreatment on the mechanical properties of 60Si2Mn steel is decrease.
(3) In the experimental temperature range, pretreatment process affects the content and grain size of the martensite in the 65Mn steel, and then affects the mechanical properties
(4) The austenite inverse transformation subcritical quenching improves the mechanical properties of 65Mn steel.
            
    The mechanical properties of 65Mn steel can be improved by austenite inverse transformation subcritical quenching.
The effect of pretreatment on the mechanical properties of 60Si2Mn steel is decrease.
(3) In the experimental temperature range, pretreatment process affects the content and grain size of the martensite in the 65Mn steel, and then affects the mechanical properties
(4) The austenite inverse transformation subcritical quenching improves the mechanical properties of 65Mn steel.
Online since: March 2010
Authors: Jian Qiu Zhou, Lu  Ma, Rong Tao Zhu
            
                Strain Gradient Plasticity Theory Based on Dislocation - controlling 
Mechanism for Nanocrystalline Materials 
Jianqiu Zhou1,2a*
, Lu Ma2, b, Rongtao Zhu2,c 
1 
Department of Mechanical Engineering, Wuhan Institute of Technology, Wuhan, Hubei Province, 
China, 430070
 
2 
Department of Mechanical Engineering, Nanjing University of Technology, Nanjing, Jiangsu 
Province, China, 210009 
a 
yyzjqcc@sohu.com, b malu41245@163.com, c rtzhu05@126.com 
 
Keywords: nanocrystalline material, strain gradient plasticity, dislocation.
Due to their dissimilar properties and different deformation mechanisms between grain interior (GI) and grain boundary affected zone (GBAZ) in the nanocrystalline (NC) materials, a two-phase composite model consisting of GI and GBAZ was developed and adopted to build strain gradient plasticity theory.
Introduction Compared with conventional coarse-grained polycrystalline metals, nanocrystalline (NC) materials are structurally characterized by a large volume fraction of grain boundary (GB), which may significantly affect their overall physical, mechanical and chemical properties.
Therefore, the strain gradient effects near interfaces should be taken into account in analysis of the overall effective properties of NC materials.
So, the relationship of dislocation density with the increasing of γGI can be written as: (7) where M, b, dGI, and ξ are the Taylor orientation factor, Burgers's vector, size of the GI and proportionality factor, respectively; C20 and are constant, and m is inversely proportional to the temperature T.
            
    Due to their dissimilar properties and different deformation mechanisms between grain interior (GI) and grain boundary affected zone (GBAZ) in the nanocrystalline (NC) materials, a two-phase composite model consisting of GI and GBAZ was developed and adopted to build strain gradient plasticity theory.
Introduction Compared with conventional coarse-grained polycrystalline metals, nanocrystalline (NC) materials are structurally characterized by a large volume fraction of grain boundary (GB), which may significantly affect their overall physical, mechanical and chemical properties.
Therefore, the strain gradient effects near interfaces should be taken into account in analysis of the overall effective properties of NC materials.
So, the relationship of dislocation density with the increasing of γGI can be written as: (7) where M, b, dGI, and ξ are the Taylor orientation factor, Burgers's vector, size of the GI and proportionality factor, respectively; C20 and are constant, and m is inversely proportional to the temperature T.
Online since: May 2021
Authors: Agung Setyo Darmawan, Kusnanto Mukti Wibowo, Poempida Hidayatullah, Muhamad Fitri
            
                The mechanical properties of the welded joints produced are influenced by various factors.
This study aims to determine the effect of the magnitude of the welding current on the mechanical properties and physical properties of the SMAW weld joints.
The researchers have been described above have investigated the effect of welding current on the mechanical properties of welded joints.
The mechanical properties studied here were through impact and hardness testing.
The Effect Of Polysilazane On The Densification And Mechanical Properties Of SICF/SIC Composites.
            
    This study aims to determine the effect of the magnitude of the welding current on the mechanical properties and physical properties of the SMAW weld joints.
The researchers have been described above have investigated the effect of welding current on the mechanical properties of welded joints.
The mechanical properties studied here were through impact and hardness testing.
The Effect Of Polysilazane On The Densification And Mechanical Properties Of SICF/SIC Composites.
Online since: October 2014
Authors: Jie Lin, Zhi Mei Liu, Yan Hua Lu, De Hong Cheng
            
                The wrinkle recovery property, whiteness and mechanical properties of the tussah silk fabric were measured and analysized.
The finishing agents BTCA in the presence of catalyst of sodium monophosphate(SHP) as well as the treatment conditions significantly affected the anti-wrinkle effects of treated tussah silk fabrics.
The effects of the process factors on the results of wrinkle resistant property, retention rate of breaking strength and whiteness were analysized, and the optimized technique formula and condition was determined at last.
Result and discussion Effects of CA finishing on the properties of tussah silk fabric.
The effect of process factors on the properties of BTCA finishing tussah silk fabric is shown in Table 2.
            
    The finishing agents BTCA in the presence of catalyst of sodium monophosphate(SHP) as well as the treatment conditions significantly affected the anti-wrinkle effects of treated tussah silk fabrics.
The effects of the process factors on the results of wrinkle resistant property, retention rate of breaking strength and whiteness were analysized, and the optimized technique formula and condition was determined at last.
Result and discussion Effects of CA finishing on the properties of tussah silk fabric.
The effect of process factors on the properties of BTCA finishing tussah silk fabric is shown in Table 2.
Online since: June 2007
Authors: Da Yong Li, Shao Rui Zhang, Ying Hong Peng, Zhong Wei Yin, Fei Zhou
            
                China  
a
shaoruiz@sjtu.edu.cn, bdyli@sjtu.edu.cn, cyinzw@sjtu.edu.cn, dyhpeng@sjtu.edu.cn, 
e
feizhou@sjtu.edu.cn 
Keywords: FEM, Macro-micro combine crystal plastic, Metal forming, Texture  
Abstract It has long been found that the crystal orientations would induce macroscopic anisotropy 
during deformation process, and then affect the deformation properties of sheet metal.
In this paper, the anisotropy coefficients of the yield function are fitted by Taylor factor and crystal plastic model.
The anisotropy coefficients of the potentials or yield functions are determined using initial texture or experimental mechanical behavior data, and ignore the change of anisotropy properties.
These methods can real disclosure the deformation principles by real-time simulating the change of crystalline orientation and anisotropy properties.
Other material properties for FCC aluminum are assumed as: elastic modulus E=69GPa, Poisson ratio v=0.3, sheet thickness t=0.8mm.
            
    In this paper, the anisotropy coefficients of the yield function are fitted by Taylor factor and crystal plastic model.
The anisotropy coefficients of the potentials or yield functions are determined using initial texture or experimental mechanical behavior data, and ignore the change of anisotropy properties.
These methods can real disclosure the deformation principles by real-time simulating the change of crystalline orientation and anisotropy properties.
Other material properties for FCC aluminum are assumed as: elastic modulus E=69GPa, Poisson ratio v=0.3, sheet thickness t=0.8mm.
Online since: February 2015
Authors: Cleverson Pinheiro, Manoel Cléber de Sampaio Alves, Simone Simões Amaral
            
                Numerous factors influencing the surface quality of wood after machining, among them we highlight the machining parameters and the properties of the wood.
Machining parameters and the properties of this material are the variables that stand out.
Fig. 3: Main effects of factors on averages of roughness average (Ra).
Fig. 4: Main effects of factors on averages for the noise emission.
Thoemen, Effects of formulation variables on surface properties of wood plastic composites, Composites Part B: Engineering. 43 (2012) 325-331
            
    Machining parameters and the properties of this material are the variables that stand out.
Fig. 3: Main effects of factors on averages of roughness average (Ra).
Fig. 4: Main effects of factors on averages for the noise emission.
Thoemen, Effects of formulation variables on surface properties of wood plastic composites, Composites Part B: Engineering. 43 (2012) 325-331
Online since: June 2017
Authors: Norifumi Miyanaga, Jun Tomioka, Shigeaki Minamikawa
            
                Many papers, therefore, discussed about the mechanical properties for practical uses [2-4].
In addition, it was pointed out by Hojo et al. that the cleaning process of SiC particles, in which the particles are washed in an acidic solusion to remove impurities, affected the particle dispersion into a nickel matrix and thus the mechanical properties [9].
The Stribeck curve gives a reasonable evaluation on frictional properties under a line cotact lubrication [10].
Their friction properties are also discussed
Sugimoto: Factors Affecting the Formation of Electroless Ni-P-SiC Composite Coatings, Journal of the Metal Finishing Society of Japan, Vol. 39 (1988), p. 705
            
    In addition, it was pointed out by Hojo et al. that the cleaning process of SiC particles, in which the particles are washed in an acidic solusion to remove impurities, affected the particle dispersion into a nickel matrix and thus the mechanical properties [9].
The Stribeck curve gives a reasonable evaluation on frictional properties under a line cotact lubrication [10].
Their friction properties are also discussed
Sugimoto: Factors Affecting the Formation of Electroless Ni-P-SiC Composite Coatings, Journal of the Metal Finishing Society of Japan, Vol. 39 (1988), p. 705