焊接接头和U型试样中的氢分布

中国腐蚀与防护学报

1989, Vol. 9

Issue (4): 307-314

研究报告

本期目录 | 过刊浏览

焊接接头和U型试样中的氢分布

徐坚;陈坚洗

宁波大学;杭州余热锅炉研究所

HYDROGEN DISTRIBUTION IN WELDED JOINTS AND U-BEND SAMPLES

Xu Jian(Ningbo University) Chen Jianxi (Hangzhou Waste-heat Boiler Research Institute)

全文: PDF(623 KB)

摘要: 采用自行研制的激光测氢装置,测量了焊接接头和U型试样中的氢分布,并且推导了U型试样弯曲部份(塑性变形区)的应变、残余应力计算公式。结果表明:在焊接接头中,1.沿熔深方向上,氢分布是不均匀的。最高氢含量在熔合线附近;2.氢的具体分布情况,取决于焊缝金属和母材的原始氢含量以及金相组织。在U型试样中,1.计算应变的公式(εθ)=2tθ/πro和残余应力公式可以用来计算U型试样弯曲部份外表面的应变量和残余应力值。冷轧态的1 Cr18Ni9 Ti钢的F=990MPa、n=0.146;2.氢分布明显受应变的影响,应变值愈大,氢含量愈高。

Abstract：The hydrogen distribution in the welded joints and U-bend samples has been measured using the Laser Hydrogen Detector. WELDED JOINTS: 1. The highest hydrogen concentration is found along the fusion line. 2. The hydrogen distribution and content in welded joint depends on the original hydrogen content and the micro-structure of the welding metal and base metal. U-BEND SAMPLES: 1. In the plastic deformation region, the dislocation sets in motion of the hydrogen and the hydrogen is concentrated from the low-density region to the highdensity region of the dislocation. 2. The strain and residual stress has been calculated by means of the plastic mechanical nth-power law, shown as following: For the stainless steel 1Cr18Ni9Ti (cold rolled) F = 990 (MPa), n = 0.146.

收稿日期: 1989-08-25

	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
	徐坚
	陈坚洗
44.8K

引用本文:

徐坚;陈坚洗. 焊接接头和U型试样中的氢分布[J]. 中国腐蚀与防护学报, 1989, 9(4): 307-314.
. HYDROGEN DISTRIBUTION IN WELDED JOINTS AND U-BEND SAMPLES. J Chin Soc Corr Pro, 1989, 9(4): 307-314.

链接本文:

https://www.jcscp.org/CN/ 或 https://www.jcscp.org/CN/Y1989/V9/I4/307

[1] Christensen, N.: Gjermunden, K.; Rose, R., Brit.Welding Journal, 1958,June, 272
[2] Hydrogen in Metals, Ed.Alefeld, N.and V61ke, J.311, Paris, Pergamon press (1977)
[3] Gerberich, W.W., Effect of Hydrogen on Behavior of Materials, Ed.Thompson, A.W.and Bernstein, I.M., 70, DECHEMA (1975)
[4] Chen Nanping, et al., Mechanism of Hydrogen Asisted Cracking, The Proc.of IMMB, Xian, 1985
[5] Xu Jian, et al., The Froc.of 4-th APCCC, Vol.1,280． Tokyo, May26-31,1985
[6] 徐坚等,中国腐蚀与防护学报,6(1) ,72(1986)
[7] 范竞藩,徐坚等,浙江工学院学报,3,13(1985)
[8] 河合望著,赖耿阳译,应用塑性加工学,P145,156,香港复汉出版社(1980)
[9] Deplanque.R.; Shreir, L.L., The Proc.of 8-th ICMC, 573(1981

No related articles found!

Viewed

Full text

Abstract

Cited

Shared

Discussed