Analysis on Test Methods Based upon Intrinsic Behavior of Tensile Deformation

LI Huawei; WANG Chengzhong

doi:10.11973/lhjy-wl201804002

PHYSICAL TESTING AND CHEMICAL ANALYSIS PART A:PHYSICAL TESTING > 2018 > 54(4): 239-243. > DOI: 10.11973/lhjy-wl201804002

LI Huawei, WANG Chengzhong. Analysis on Test Methods Based upon Intrinsic Behavior of Tensile Deformation[J]. PHYSICAL TESTING AND CHEMICAL ANALYSIS PART A:PHYSICAL TESTING, 2018, 54(4): 239-243. DOI: 10.11973/lhjy-wl201804002

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Analysis on Test Methods Based upon Intrinsic Behavior of Tensile Deformation

Shanghai Xiuyang Material Testing Technology Co., Ltd., Shanghai 201818, China

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Received Date: July 13, 2017

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Abstract

The intrinsic behavior of tensile deformation was discussed on meso-level and macro-level, starting from dislocation slip and combining with the characteristics of crystal structure. It is that microscopic plastic deformation appears at different times and distributes in different areas, and occurs in all stages of the tensile stress-strain curve. The influence of strain rate on tensile properties was analyzed emphatically, and the scientificalness, difficulties and suggestions in practical operation of GB/T 228.1-2010 were also investigated from the aspects of rigidness correction and strain rate control. The results indicate that the plastic deformation in all stages of tensile test was affected by the strain rate in different degrees.
- nature of tensile deformation,
- dislocation slip,
- microscopic plastic deformation,
- rigidness correction,
- strain rate

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