Friction stir welding of MA 957 oxide dispersion strengthened ferritic steel

被引：0
|
作者：
Jasthi, BK [1 ]
Howard, SM [1 ]
Arbegast, WJ [1 ]
Grant, GJ [1 ]
Koduri, S [1 ]
Herling, DR [1 ]
机构：
[1] S Dakota Sch Mines & Technol, Dept Mat & Met Engn, Rapid City, SD 57701 USA
来源：
Friction Stir Welding Processing III | 2005年
关键词：
D O I：
暂无
中图分类号：
T [工业技术];
学科分类号：
08 ;
摘要：
A 1-in. (25.4 mm) diameter yttria-dispersion-strengthened MA 957 ferritic steel alloy tube with a 0. 125" (3.18 mm) wall thickness was successfully plasticized by friction stir welding. The pin tool was a W- 25% Re tool with a 0. 125" (3.17 mm) diameter pin. It showed no discernable wear for the total 12" (305 mm) of weld. Weld conditions were 1000 and 1400 RPM, 4 in/min (101 mm/min), with and without preheating to 135 degrees C. Metallographic analysis of the post friction-stir welded material showed a decrease in material hardness ranging from 225 +/- 22 HV compared to the parent material, which was 373 21 HV. All weld conditions produced plasticization; however, improved plasticization was observed for preheated samples.
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页码：75 / 79
页数：5
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