Abstract
The metastable austenite was transformed to martensite by prestrain tension of SUS304 stainless steel to study the influence of transformed martensite on its subsequent work-hardening behavior under the uniaxial tensile condition. The X-ray diffractometer (XRD) was employed to detect the transformed martensite. Results showed that the volume fraction of transformed martensite increases with increasing prestrain. The pre-transformed martensite in the microstructure remarkably affects the deformation behavior of the steel, and the strength increases and the elongation decreases. The work-hardening curve of prestrained specimens observably changes with true strain. The work-hardening exponent n of stainless steel decreases with the increase of pre-transformed martensite. The achievement is a significant contribution to the process design during pressing.
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Foundation Item: Item Sponsored by National Natural Science Foundation of China (50675128; 50975166)
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Xue, Zy., Zhou, S. & Wei, Xc. Influence of pre-transformed martensite on work-hardening behavior of SUS 304 metastable austenitic stainless steel. J. Iron Steel Res. Int. 17, 51–55 (2010). https://doi.org/10.1016/S1006-706X(10)60072-6
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DOI: https://doi.org/10.1016/S1006-706X(10)60072-6