XIA Yuebo WANG Zhongguang Institute of Metal Research
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Academia Sinica
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Shenyang
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China Associate Professor
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Institute of Metal Research
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Academia Sinica
,
Shenyang
,
China
金属学报(英文版)
Studies of stress relaxation were carried out on commercially pure titanium.It was found that the stress relaxation behaviour relates closely to the level of deformation.The amount of re- laxed stress (?)σ_R is independent of the amplitude of stress dip in a certain range of deformation.However,it depend on the stress level at which stress relaxation begins in a cer- tain relaxation time t_R.Both back(critical)stress σ_c and flow stress σ_o vary with the strain in a similar manner.The effective stress on dislocations σ~* increases with increasing strain under low strains,but keeps constant under higher strains.
关键词:
stress relaxation
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