34CrNi3Mo钢在NaOH水溶液中应力腐蚀开裂机理的研究

中国腐蚀与防护学报

1983, Vol. 3

Issue (1): 35-40

研究报告

本期目录 | 过刊浏览

34CrNi3Mo钢在NaOH水溶液中应力腐蚀开裂机理的研究

郑文龙

上海材料研究所

A STUDY OF SCC MECHANISM OF 34CrNi3Mo STEEL IN AQUEOUS NaOH SOLUTION

Zheng Wenlong(Shanghai Research Institute of Materials)

全文: PDF(584 KB)

摘要: 本文应用恒电位下应力腐蚀开裂(SCC)的断裂力学试验方法、氢渗透、声发射和电子金相技术,研究了34CrNi3Mo钢在30％NaOH水溶液中SCC机理:在开路电应下,只有当温度>50℃时方可出现SCC;在80℃时,当给定电位E于-1150mV(SCE)时,为活性通道溶解(APC)型SCC,而当给定电位负于-1150mV(SCE)时,州为氢脆(HE)型SCC。由此可见,即使是同—钢—环境体系,SCC的机理也是可变的,因此,想把SCC机理归纳成一个统一的模型是不妥当的。

Abstract：The author studied the SCC mechanism of 34CrNi3Mo steel in 30% NaOH solution, through potentiostatic SCC test based on fracture mechanics, electrochemical hydrogen permeation, acoustic emission and electrofractography.The results showed that above 50℃ SCC can occur when the potential is at free corrosion potential.When at 80℃, the potential is more positive than-1150mV (SCE) , the cracking belongs to active path corrosion (APC) type of SCC; When the potential is more negative than-1150mV (SCE) , the cracking belongs to hydrogen embrittlement (HE) type of SCC.Even in the same steel—environment system the mechanism of SCC may be changeable.Therefore it is not proper to say that SCC is only governed by a single mechanism.

收稿日期: 1983-02-25

	服务

	把本文推荐给朋友
	加入引用管理器
	E-mail Alert
	RSS
	作者相关文章
	郑文龙
44.8K

引用本文:

郑文龙. 34CrNi3Mo钢在NaOH水溶液中应力腐蚀开裂机理的研究[J]. 中国腐蚀与防护学报, 1983, 3(1): 35-40.
. A STUDY OF SCC MECHANISM OF 34CrNi3Mo STEEL IN AQUEOUS NaOH SOLUTION. J Chin Soc Corr Pro, 1983, 3(1): 35-40.

链接本文:

https://www.jcscp.org/CN/ 或 https://www.jcscp.org/CN/Y1983/V3/I1/35

[1] Troiano, A. R., The Role of Hydrogen and other lnterstitials in the Mechanical Behavior of Metals, Trans. ASM, 52, 54(1960)
[2] Troiano, A. R., in "Hydrogen in Metals" , Ed. by I. M. Bernstein and A . W . Thompsm, ASM, 12(1974)
[3] Snape, E., Br. Corros. J., 4, September, 253(1969)
[4] Kortovich, C. S., A Corrosion of Hydrogen Embrittlement and SCC in High Strength Steel, July, 15 ( 1971)
[5] Wilde, B. E., Corrosion, 27, 326(1971)
[6] Gerberich, W. W. and Harbower C. E., 同 3． P. 420
[7] Dunegan, H. L. and Tetelman A. S., Eng. Fracture Mechanics, 2, 387(1971)
[8] 冈田秀弥,材料科学,13,(1～3) ,24(1976)
[9] ASTM Desig. E399-74, 1976, Ann. Book of ASTM standards, Part 10, P. 471
[10] 徐克薰、苏立民,电化学技术测氢渗透瞬变行为研究钢的氢脆,中国腐蚀与防护学报,5,1,1(1933)
[11] 肖纪美,化学介质与断裂过程,北京钢铁学院,14(1979)
[12] Bohnenkamp,K., Proceeding of Conference of Fundamental Aspects of Stress Corrosion Cracking, NACE, Houston, Texas, 374(1967)
[13] #12
[14] Choi, J. Y., Met. Trans., 1, 911(1970) ,
[15] Towsend, H. E., Corrosion, 24, 261(1968)
[16]#12
[17] R. S. Shalvoy, S. K. Duglin, and R. J. Lindinger, Corrosion, 37,9, 491(1981)

No related articles found!

Viewed

Full text

Abstract

Cited

Shared

Discussed