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文摘
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为了提高不锈钢焊接接头的组织均匀性及其抗H2S应力腐蚀性能,采用超音速颗粒轰击(Supersonic Particles Bombarding缩写为(SSPB))技术对0Cr18Ni9Ti不锈钢焊接接头表面进行处理,利用金相显微镜和透射电镜对材料表面的微观组织进行了分析.利用X射线应力衍射仪对纳米化后的式样进行残余应力分析,抗硫化氢应力腐蚀试验按照GB4157-84标准执行.结果表明,经超音速颗粒轰击处理可以使样品表层晶粒细化至纳米量级,表层晶粒尺寸平均为10.4 nm,而且表层组织得到均一化.试验证实抗H2S应力腐蚀性能得到显著提高。 |
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其他语种文摘
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). Supersonic particles bombarding (SSPB) technology was used to modify the surface of 0Crl8Ni9Ti stainless steel welding joint so as to increase its structure uniformity and resistance to hydrogen sulfide stress corrosion. Thus the microstructure of the modified surface was analyzed using a metallurgical microscope and trans-mission electron microscope. The residual stress in the nanocrys-tallized surface was analyzed using an X-ray difiractometer. And the resistance of the modified surface to the stress corrosion of hy-drogen sulfide was evaluated according to GB 4157 - 84 standard method. The results showed that surface nanocrystallization of the stainless steel occurred after the SSPB treatment, which led to the decrease in the grain size (to be about 10. 4 nm) and the in-crease in the surface structure homogeneity. Moreover, the resist-ance of the stainless steel to the stress corrosion of H2 S was sig-nificantly increased after the SSPB treatment. |
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来源
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材料保护
,2005,38(1):13-16 【核心库】
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关键词
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超音速颗粒轰击
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表面纳米化
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0Cr18Ni9Ti
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焊接接头
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抗H2S应力腐蚀
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地址
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中国科学院金属研究所, 辽宁, 沈阳, 110016
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语种
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中文 |
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文献类型
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研究性论文 |
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ISSN
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1001-1560 |
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学科
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金属学与金属工艺 |
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文献收藏号
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CSCD:1874789
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