Microstructure evolution and mechanical properties of friction stir welding super-austenitic stainless steel S32654

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• 作者：Huabing Li^a ; ^{huabing_li@163.com} ; Shouxing Yang^a ; Shucai Zhang^a ; ^{zscdbdx@163.com} ; Binbin Zhang^a ; Zhouhua Jiang^a ; Hao Feng^a ; Peide Han^b ; Jizhong Li^c
• 关键词：Friction stir welding ; Super-austenitic stainless steel ; S32654 ; Microstructure evolution ; Recrystallization ; Mechanical properties
• 刊名：Materials & Design
• 出版年：2017
• 出版时间：15 March 2017
• 年：2017
• 卷：118
• 期：Complete
• 页码：207-217
• 全文大小：3179 K
• 卷排序：118

文摘

Friction stir welding was successfully applied to super-austenitic stainless steel S32654. Grain structure evolution in stir zone is dominated by continuous dynamic recrystallization. Strain rate plays a dominated effect on grain refinement. Grain refinement, high density dislocations and substructures together improve hardness and strength, but reduce elongation. The more suitable welding parameters are determined as 300 rpm and 100 mm/min for this steel.