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材料研究学报  2012, Vol. 26 Issue (3): 274-278    
  研究论文 本期目录 | 过刊浏览 |
微观组织对空化作用下不锈钢表层力学性质的影响
李栋梁1, 邹冠驰1, 郑根土2, 雍兴跃1
1.北京化工大学化学工程学院 北京 00029
2.巨化集团公司锦纶厂 衢州 324004
Effects of the Microstructures on Surface Layer Mechanical Properties of Stainless Steels Under Cavitation
LI Dongliang1,  ZOU Guanchi1,  ZHENG Gentu1,  YONG Xingyue1
1.Beijing University of Chemical Technology, Beijing 100029
2.Juhua Group Corporation, Quzhou 324004
引用本文:

李栋梁 邹冠驰 郑根土 雍兴跃. 微观组织对空化作用下不锈钢表层力学性质的影响[J]. 材料研究学报, 2012, 26(3): 274-278.
, , , . Effects of the Microstructures on Surface Layer Mechanical Properties of Stainless Steels Under Cavitation[J]. Chin J Mater Res, 2012, 26(3): 274-278.

全文: PDF(889 KB)  
摘要: 对比在空化作用下双相不锈钢和奥氏体不锈钢腐蚀表层力学性质的变化规律, 研究了表层力学性质的劣化与空泡腐蚀质量损失、腐蚀微观形貌之间的关系。结果表明, 在空化作用下, 微观组织对不锈钢腐蚀表层力学性质(H/E)的影响随着表层深度的变化而显著。两种具有不同微观组织的不锈钢的空泡腐蚀形貌有明显的差异, 但是都存在一个发生严重腐蚀失效的表层力学性质劣化阈值。一旦腐蚀表层力学性质的劣化低于劣化阈值, 空泡腐蚀的质量损失急剧增大, 空泡腐蚀形貌显著改变。这个阈值的数值与不锈钢的微观组织无关。
关键词 金属材料不锈钢表层力学性质纳米压入法空化作用微观组织    
Abstract:The changes of surface layer mechanical properties for duplex stainless steel and austenitic stainless steel after cavitaion corrosion were investigated by nano-indentation, and the relationship of surface layer mechanical properties with cumulative mass loss and microscopic corrosion morphologies was further investigated by weight loss and SEM. The results show that there are obvious effects of the microstructures on the changes of surface layer mechanical properties with displacement. Although stainless steels with different microstructures have different corrosion morphologies after cavitation corrosion, there is a same threshold for the degradation of surface layer mechanical properties, below which stainless steels were heavily subjected to cavitation corrosion and the microscopic morphologies of their corroded surfaces change markedly. This threshold is not related with the microstructures of stainless steels.
Key wordsmetallic materials    stainless steel    surface layer mechanical properties    nano-indentation    cavitation    microstructures
收稿日期: 2012-01-04     
ZTFLH: 

TG174

 
基金资助:

国家自然科学基金50871011资助项目。

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