Microstructure and properties in friction stir weld of 12Cr steel

被引：23
|
作者：
Hua, P. [1 ,2 ]
Moronov, S. [2 ]
Nie, C. Z. [2 ]
Sato, Y. S. [2 ]
Kokawa, H. [2 ]
Park, S. H. C. [3 ]
Hirano, S. [3 ]
机构：
[1] Hefei Univ Technol, Sch Mat Sci & Engn, Hefei 230009, Peoples R China
[2] Tohoku Univ, Grad Sch Engn, Dept Mat Proc, Aoba Ku, Sendai, Miyagi 9808579, Japan
[3] Hitachi Ltd, Hitachi Res Lab, Hitachi, Ibaraki 3191292, Japan
来源：
SCIENCE AND TECHNOLOGY OF WELDING AND JOINING | 2014年 / 19卷 / 01期
关键词：
12Cr heat resistant ferritic steel; Friction stir welding; Martensite; Microstructure properties relationship; MECHANICAL-PROPERTIES; STRENGTH;
D O I：
10.1179/1362171813Y.0000000167
中图分类号：
T [工业技术];
学科分类号：
08 ;
摘要：
Friction stir welding was employed for joining of 12Cr heat resistant ferritic steel. Microstructure and mechanical properties in the obtained welds were examined and their relationship was established. The stir zone microstructure was found to consist of quenched martensite with numerous fine dispersoids uniformly distributed in grain interiors. The formation of this microstructure remarkably strengthened the stir zone. Tempering for 3.6 ks at 923 K reduced the as welded hardness of friction stir weld to nearly base material level.
引用
收藏
页码：76 / 81
页数：6
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