期刊
STEEL RESEARCH INTERNATIONAL
卷 94, 期 5, 页码 -出版社
WILEY-V C H VERLAG GMBH
DOI: 10.1002/srin.202200582
关键词
austenite; corrosion; hydrogen embrittlement; incremental step loading technique; martensitic stainless steel
The novel metastable austenitic stainless steel, 13Cr12Mn, shows excellent mechanical properties and resistance to hydrogen embrittlement, as well as good corrosion resistance in alkaline solutions.
A novel metastable austenitic stainless steel denoted as 13Cr12Mn is obtained by adding 12 wt% Mn to 13Cr-5Ni-2Mo super-martensitic stainless steel. The designed 13Cr12Mn exhibits a yield strength of 899 MPa, a tensile strength of 1068 MPa, and an elongation of 21.2%. The in situ hydrogen-charging incremental step loading technique experiments are conducted to evaluate hydrogen embrittlement. The hydrogen-induced cracking threshold stress of 13Cr12Mn is determined to be 961 MPa, which exceeds that of tempered S13Cr with a similar yield strength by 400 MPa. In addition, 13Cr12Mn also shows good resistance to general corrosion and pitting corrosion in alkaline solutions.
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