Friction stir welding of mild steel to alloy 625-development of welding parameters

被引：11

作者：

Rodriguez, J. ^{[1
,2
]}

Ramirez, A. J. ^{[1
,2
]}

机构：

[1] Brazilian Nanotechnol Natl Lab LNNano, Campinas, SP, Brazil

[2] Univ Campinas UNICAMP, Campinas, SP, Brazil

来源：

SCIENCE AND TECHNOLOGY OF WELDING AND JOINING | 2014年 / 19卷 / 04期

关键词：

FSW; Dissimilar joint; Steel; Ni based alloy; Welding parameters; MECHANICAL-PROPERTIES; MICROSTRUCTURE; JOINTS; SPEED;

D O I：

10.1179/1362171814Y.0000000198

中图分类号：

T [工业技术];

学科分类号：

08 ;

摘要：

Friction stir welding parameters were developed for a 6 mm thick dissimilar butt joint made of mild steel and Ni based alloy 625. A composite W-Re/polycrystalline cubic born nitride tool was used to study the effect of tool offset (between 0 and 3.13 mm away from the alloy 625 plate) and rotational speed (between 250 and 350 rev min(-1)) on joint consolidation. When non-optimal parameters were used, macrovoids were observed at the advancing side and faying surface near the joint interface root. Defect free joints were obtained using 300 rev min(-1), 100 mm min(-1), tool offset of 1.63 mm, and axial force between 25 and 30 kN, under force controlled mode.

引用

页码：343 / 349

页数：7

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