玻璃喷丸处理提高304不锈钢焊接接头抗应力腐蚀性能的研究

中国腐蚀与防护学报

2005, Vol. 25

Issue (3): 152-156

研究报告

本期目录 | 过刊浏览

玻璃喷丸处理提高304不锈钢焊接接头抗应力腐蚀性能的研究

倪红芳;凌祥;彭薇薇

南京工业大学

PREVENTION OF STRESS CORROSION CRACKING IN WELD JOINT OF TYPE 304 STAINLESS STEEL BY GLASS-BEAD PEENING

;;Weiwei Peng

南京工业大学

全文: PDF(255 KB)

摘要: 基于对304不锈钢焊接试板表面喷丸处理前后的表层残余应力X射线衍射测量，研究了在42%沸腾MgCl2溶液中，表面玻璃喷丸和铸钢喷丸对304不锈钢焊接试板应力腐蚀开裂敏感性的影响，比较了采用不同铸钢喷丸和玻璃喷丸处理工艺的304不锈钢焊接试板抗应力腐蚀开裂的能力.试验结果表明：未喷丸处理的焊接试板6?h就发生开裂，50%、100%覆盖率的铸钢喷丸焊接试板分别在试验310?h和3500?h开裂，而200%覆盖率的铸钢喷丸焊接试板，50%、100%、200%覆盖率的玻璃喷丸焊接试板经历3500?h也未见开裂.因此，喷丸处理工艺能够很好地提高焊接构件抗应力腐蚀开裂能力；且在同样喷丸强度下，焊接接头经玻璃喷丸工艺处理后的抗应力腐蚀能力明显优于铸钢喷丸处理工艺.

关键词 ： 304不锈钢, 焊接接头, 玻璃喷丸, 应力腐蚀开

Abstract：Based on X-ray measurements of the residual stresses of shot peened and unpeened welded plates of 304 stainless steel,effects of glass bead peening and cast steel shot peening on stress corrosion susceptibility of weld joints of AISI type 304 stainless steel in boiling 42% MgCl2 were studied.Comparison of the potential against SCC of specimens peened by glass beads and cast steel shot s were carried on.The test results show:unpeened specimens crack within 6 hours.The steel-peened specimens with 50% coverage crack in boiling 42% MgCl2 after immersion for 310 hours,while the steel-peened specimens with 100% coverage crack after immersion for 3500 hours.However,cast steel-peened specimens with 200% coverage and glass-peened specimens with 50%,100% and 200% coverage are tested for a total of 3500 hours without visible stress corrosion cracks in the peen ed surfaces.In a word,shot peening is an effective method for protecting weldments against SCC,and weldments peened by glass beads resist SCC better than those peened by cast steel shots.

Key words： type 304 stainless steel weld joint glass-bead peening stress corrosion cracking (SCC)

收稿日期: 2004-07-21

ZTFLH:

TG172.9

通讯作者: 彭薇薇 joyce E-mail: yuwei0492@sina.com

Corresponding author: Weiwei Peng E-mail: yuwei0492@sina.com

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引用本文:

倪红芳; 凌祥; 彭薇薇 . 玻璃喷丸处理提高304不锈钢焊接接头抗应力腐蚀性能的研究[J]. 中国腐蚀与防护学报, 2005, 25(3): 152-156 .
Weiwei Peng. PREVENTION OF STRESS CORROSION CRACKING IN WELD JOINT OF TYPE 304 STAINLESS STEEL BY GLASS-BEAD PEENING. J Chin Soc Corr Pro, 2005, 25(3): 152-156 .

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https://www.jcscp.org/CN/ 或 https://www.jcscp.org/CN/Y2005/V25/I3/152

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