1Cr18Ni9Ti不锈钢形变诱发马氏体相变规律及其对孔蚀敏感性的影响

中国腐蚀与防护学报

1996, Vol. 16

Issue (1): 47-52

研究报告

本期目录 | 过刊浏览

1Cr18Ni9Ti不锈钢形变诱发马氏体相变规律及其对孔蚀敏感性的影响

许淳淳;何珂;吴永　;邵光杰

北京化工大学;香港理工大学;燕山大学

DEFORMATION-INDUCED MARTENSITE PHASE TRANSITION AND ITS EFFECT ON PITTING SUSCEPTIBILITY FOR 1Cr18Ni9Ti STAINLESS STEEL

Xu Chunchun;He Ke

全文: PDF(1903 KB)

摘要: 通过低温（－７０℃）拉伸制备不同马氏体相交量的１Ｃｒ１８Ｎｉ９Ｔｉ试样，用ＸＲＤ、ＴＥＭ及金相观察研究形变诱发马氏体相变的规律。用电化学方法研究。α’马氏体（铁磁相）含量对１Ｃｒ１８Ｎｉ９Ｔｉ钢在含Ｃｌ－溶液中孔蚀敏感性的影响。结果表明：随试样变形量加大，形变诱发马氏体中铁磁性的α’马氏体含量不断增大，而ε马氏体相的量始终较小。材料的孔蚀敏感性先随铁磁相含量的增大而增大；当铁磁相含量达到４．５８％以后，孔蚀敏感性反而渐降；当铁磁相含量超过２５．５％后，孔蚀敏感性又增加。

关键词 ：孔蚀, 拉伸, 马氏体转变, 铁磁相

Abstract：Specimens of 1Cr18Ni9Ti stainless steel were prepared by low temperature elongation deformation at－70℃ to obtain various martensite contents．The phase transition process was examined by TEM，XRD and metallography.Pitting susceptibility of the steel in 1 mol/L NaCl was evaluated by electrochmical hysteresis technique and polarization resistance measurements. Both α’－and ε-martensite were observed after the elongation deformation.The content of α’－martensite increased with increasing degree of deformation，while the amount of ε－martensite was consistently low and remained unchanged.These ferromagnetic phases had significant effect on the pitting susceptibility of the steel.When their content was less than 4．58％ or more than 25.5％，the pitting susceptibility increased with the increasing amount of ferromagnetic phases.In the range from 4.58％ to 25.5％，however，the specimens containing more martensite were found to be less susceptible to pitting．These findings were briefly explained.

Key words： Pitting；Elongation Martensite transformation Ferromegnetic phase

收稿日期: 1996-02-25

基金资助:国家自然科学基金;;金属腐蚀与防护国家重点实验室资助

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许淳淳;何珂;吴永　;邵光杰. 1Cr18Ni9Ti不锈钢形变诱发马氏体相变规律及其对孔蚀敏感性的影响[J]. 中国腐蚀与防护学报, 1996, 16(1): 47-52.
. DEFORMATION-INDUCED MARTENSITE PHASE TRANSITION AND ITS EFFECT ON PITTING SUSCEPTIBILITY FOR 1Cr18Ni9Ti STAINLESS STEEL. J Chin Soc Corr Pro, 1996, 16(1): 47-52.

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https://www.jcscp.org/CN/ 或 https://www.jcscp.org/CN/Y1996/V16/I1/47

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