کد مقاله کد نشریه سال انتشار مقاله انگلیسی نسخه تمام متن
1574822 1514727 2014 6 صفحه PDF دانلود رایگان
عنوان انگلیسی مقاله ISI
Gradient characteristics and strength matching in friction stir welded joints of Fe–18Cr–16Mn–2Mo–0.85N austenitic stainless steel
موضوعات مرتبط
مهندسی و علوم پایه مهندسی مواد دانش مواد (عمومی)
پیش نمایش صفحه اول مقاله
Gradient characteristics and strength matching in friction stir welded joints of Fe–18Cr–16Mn–2Mo–0.85N austenitic stainless steel
چکیده انگلیسی

In this study, significant microstructure and mechanical property gradients were observed along the transverse and thickness directions of as-welded friction stir welded joints of Fe–18Cr–16Mn–2Mo–0.85N austenitic stainless steel. These gradients resulted in the combined overmatching feature with higher strength but lower elongation than base metal. Further, post-weld heat treatment was shown to effectively weaken these gradients in the as-welded joints. Therefore, the elongation of the joint was increased companied with enhanced strength. The tensile performances of the overmatched joints were determined by the match factors and the proportions of nugget zone (NZ) in gauge length. Further, a reduction in the match factor only resulted in obvious increment in elongation of the joint. However, the best tensile properties of the joints can be achieved by simultaneously decreasing both the match factor and the proportion of the NZ in the gauge range.

ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Materials Science and Engineering: A - Volume 616, 20 October 2014, Pages 246–251
نویسندگان
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