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The effects of the content of molybdenum on the dynamic properties of tungsten heavy alloys were investigated.Increase in mechanical properties was observed in molybdenum-added tungsten heavy alloys, due to the refined microstructure.
Among them, Mo was found to significantly promote the mechanical properties of the W-Ni-Fe alloys under quasi-static test.
The above observations are considered important factors affecting the properties of the tungsten alloys.
A quasi-static test is carried out herein to study the mechanical properties of the alloys.
The high strain rate mechanical properties of materials may be substantially different from their quasi-static properties, and the high strain rate properties should be the discriminating properties for penetrator materials.

The general rules of various factors impacting on burr formation were obtained in micro-machining process.
Metal cutting burr is formed in the cutting process and all factors that affect the metal cutting process will affect the formation of the burr.
The shape and size of the burr in cutting process not only depend on the combined effect of various factors but also organizational status and mechanical properties of the material, the tool geometry, cutting capacity, machining methods and the support stiffness in terminal ministry of the workpiece and other factors [2].
Therefore, the research on formation mechanism and influencing factors of the micro-burr will help improve the quality of micro-parts.
The material properties of Al2024-T3 is shown in Tab. 1 [7].

HTMP parameters Mechanical properties KCV, /KV*, ( kJ/ m 2)/J Тf ( X1 ), 0 С n ( X2 ) Vcool
When air cooling is applied the structure radically changes and at the same time the mechanical properties of the steel.
The highest effect of the cooling rate on the mechanical properties has a simple explanation.
The resulting mechanical properties of the Nb and V-bearing steels with the different cooling rates are presented in Table 3.
Mechanical properties of Nb (Ni-Nb(B)) and V-bearing steels Mechanical properties KCV, kJ/ m 2) Test no.

The mechanical properties of one such steel are presented in Ref. [1].
The T0 standard covers specific types of ferritic steels with yield strengths between 275 and 875 MPa, so it is therefore important to find out what are the microstructural factors affecting the correlation for higher strength steels.
Mechanical properties (Each value is a mean of four measurements).
Toughness and correlation properties.
However, the metallurgical factors affecting the relationship between T0 and T28J are yet to be identified.

The mechanical properties have been assessed by means of tensile and high-cycle fatigue tests.
This phenomenon can affect the mechanical properties, especially fatigue.
Table 2 – Tensile Properties of Welded and Not Welded Steels In Table 2, the mechanical properties obtained from the tensile tests is shown.
[7] L.Mujica, S.Weber, H.Pinto, C.Thomy, F.Vollertsen, Microstricture and mechanical properties of laser-melded joints of TWIP and TRIP steels.
[11] Y.T.Chen, A.M.Guo, L.X.Wu, J.Zeng, P.H.Li, Microstructure and mechanical property development in the simulated heat affected zone of V treated HSLA steels.

The two processes determine different surface properties due to various mechanical and thermal loads in grinding and complex chemical reaction in etching pretreatment.
The chemical composition and mechanical properties of YL10.2 cemented carbide are given in Table 1.
In order to analyze the trend of the residual stress with respect to the variation of the factors under study, a fractional factorial Taguchi experiment incorporating two factors at two levels is employed, see test No.1 to test No.4 in Table 2.
The result showed that wheel speed is a significant factor affecting residual stress.
The wheel velocity from 20 to 30 m/s is a significant factor affecting residual stress in the cup wheel grinding.

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.

Effect of Second Phase on Mechanical Properties of Bainite-base Steels Hakcheol Lee 1,a, Xiaodan Wu 2,b, Young Min Kim 3,c and Nack J.
Effects of acicular ferrite and retained austenite on the mechanical properties of bainite-base steels were investigated.
Tensile properties.
Tensile properties of all steels are presented in Table 4.
There are several factors which affect the stability of retained austenite such as its solute content, size, distribution, etc. [9, 12, 13].

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.

This article reports the analysis method of the factors effected bond qualities of fabric composites.
Introduction Interlinings are the key factors in the apparel accessories and play important roles in the garments quality.
Fused materials and bond quality are also the main elements of the factors affecting the quality of clothes.
The size of the adhesive could be easily measured with the development of micro-detection instrument before the experiment.The mechanical properties of the fabrics and fused interlinings were tested in FAST system and KES system.
Conclusions In this paper, we present the principal component analysis .In general, the bond quality is closely related to the material properties under the correct pressing condition.