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the viewpoint of strain-hardening. The Hall-Petch equation is a widely accepted empirical theory relating to the yield stress, which is extended by Armstrong to include the flow stress region. In Eq.(2), the first term is the stress required to move the individual dislocations in micro-yield slip band pileups confined to isolated grains, whereas the second term is the stress needed to propagate the general......
J. Cent. South Univ. Technol. (2010) 17: 738-743 DOI: 10.1007/s11771-010-0549-6 Stress field evolution law of mining environment reconstructing structure with change of filling height CHEN...; Abstract: For improving global stability of mining environment reconstructing structure, the stress field evolution law of the structure with the filling height change of low-grade backfill......
softening to hardening. The failure mode of intact Middle Pleistocene Epoch loess is shear failure with the rupture angle between 55° and 61°. And it is better to determine the yield stress (py, qy) of the intact loess under different confining pressures by using the εv-q/p curve. Along with the increase of confining pressure, yield deviatoric stress qy and yield spherical stress py present......
. As a result, the movement of dislocations is hardly blocked and the deformation could continue at a nearly constant applied stress. Consequently, the so-called yield plateau behavior presents...Probing into the Yield Plateau Phenomenon in Commercially Pure Titanium During Tensile TestsXiaohui Shi,Zuhan Cao,Zhiyuan Fan,Ruipeng Guo,Junwei QiaoCollege of Materials Science and Engineering......
-Coulomb (M-C) and Drucker-Prager (D-P) yield criteria under various stress states were derived firstly, and the yield behavior adaptabilities of bulk amorphous alloys described by the two criteria were compared based on the data of literatures. Finally, effects of normal stress and hydrostatic pressure on the yield behavior of BAAs were intelligently demonstrated. The results show......
Corrosion behavior of 2195 and 1420 Al-Li alloys in neutral 3.5% NaCl solution under tensile stress LI Jin-feng(李劲风), CHEN Wen-jing(陈文敬), ZHAO Xu-shan(赵旭山), REN Wen-da(任文达) , ZHENG Zi-qiao(郑子樵...-Li alloys under 308 and 490 MPa tensile stress respectively in neutral 3.5% NaCl solution were investigated using electrochemical impedance spectroscopy(EIS) and scanning electron microscope(SEM......
. When the stress reached the yield limit, the stress-strain curves were obviously nonlinear, which stand for the nonlinear viscoplastic properties of the redstone granular soil. The equal time...J. Cent. South Univ. Technol. (2008) 15(s1): 397-401 DOI: 10.1007/s11771-008-387-y Effects of stress conditions on rheological properties of granular soil in large triaxial rheology laboratory......
from the unified linear yield criterion and the associated flow rule. The expression is suitable for various linear yield loci in the error triangle between Tresca’s and twin shear stress yield loci... years, one concern regarding linearization of yield criteria has been put forward and become much more extensive. In 1983, YU[6] proposed a linear twin shear stress yield criterion, called TSS......
J. Cent. South Univ. (2016) 23: 1858-1862 DOI: 10.1007/s11771-016-3240-8 Effect of a novel three-step aging on strength, stress corrosion cracking and microstructure of AA7085 CHEN Song-yi(陈送义)1, 2...: The influence of a novel three-step aging on strength, stress corrosion cracking (SCC) and microstructure of AA7085 was investigated by tensile testing and slow strain rate testing combined......