强度对钢SCC敏感性的影响

中国腐蚀与防护学报

1984, Vol. 4

Issue (4): 287-294

研究报告

本期目录 | 过刊浏览

强度对钢SCC敏感性的影响

郑文龙

上海材料研究所

EFFECT OF STRENGTH OF STEELS ON THE SUSCEPTIBILITY TO STRESS CORROSION CRACKING

Zheng Wenlong(Shanghai Research Institute of Materials; Shanghai; China)

全文: PDF(2319 KB)

摘要: 通过对不同强度等级的40CrNiMo,50Mn 18Cr4MoVN,34CrNi3Mo钢的SCC研究,探讨了强度对不同机理SCC敏感性的影响规律。试验结果表明,强度对不同类型SCC的敏感性有着不同的影响。对于由氢脆和由强化相构成连续活性通道阳极溶解机理控制的SCC,提高强度使钢的抗SCC能力降低;而在塑性变形所控制下的SCC,提高钢的强度可以提高抗SCC的能力。

Abstract：The susceptibility to SCC (stress corrosion cracking)of steels with different strength levels has been investigated by measuring K_(1scc), hydrogen permeation, acoustic emission and by electronfractography. The metal/environment systems investigated were 4OCrNiMo steel in 3.5% NaCl solution at room temperature, 50Mn18Cr4MoVN steel in 36% Ca(NO_3)_2+3％NH_4NO_3 solution at room temperature and 34CrNi3Mo steel in 30% NaOH solution at 80℃. The test of the last system was conducted at open circuit potential as well as at a controlled potential of-1400mV (SCE). The results reveal that the effect of strength of steels on ehe susceptibility to SCC differs with different mechanism and cannot be gentralizedo When plastic deformation is the controlling factor, the increase of the strength of steels can improve the resistance to SCC.

收稿日期: 1984-08-25

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引用本文:

郑文龙. 强度对钢SCC敏感性的影响[J]. 中国腐蚀与防护学报, 1984, 4(4): 287-294.
. EFFECT OF STRENGTH OF STEELS ON THE SUSCEPTIBILITY TO STRESS CORROSION CRACKING. J Chin Soc Corr Pro, 1984, 4(4): 287-294.

链接本文:

https://www.jcscp.org/CN/ 或 https://www.jcscp.org/CN/Y1984/V4/I4/287

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