Laser-arc hybrid welding of wrought to selective laser molten stainless steel

被引：80
作者：
Casalino, Giuseppe [1 ]
Campanelli, Sabina Luisa [1 ]
Ludovico, Antonio Domenico [1 ]
机构：
[1] Politecn Bari, DMMM, I-70126 Bari, Italy
来源：
INTERNATIONAL JOURNAL OF ADVANCED MANUFACTURING TECHNOLOGY | 2013年 / 68卷 / 1-4期
关键词：
Fiber laser; Hybrid welding; Stainless steel; Selective laser molten powder; MECHANICAL-PROPERTIES; MICROSTRUCTURE;
D O I：
10.1007/s00170-012-4721-z
中图分类号：
TP [自动化技术、计算机技术];
学科分类号：
0812 ;
摘要：
Selective laser melting (SLM) is a successful tool-free powder additive technology. The success of this manufacturing process results from the possibility to create complex shape parts, with intrinsic engineered features and good mechanical properties. Joining SLM steel to similar or dissimilar steel can overcome some limitations of the product design like small dimension, undercut profile, and residual stress concentration. In this way, the range of applications of the SLM process can be broadened. In this paper, the hybrid laser welding of selective laser molten stainless steel was investigated. A high-power fiber laser was coupled to an electric arc and austenitic stainless steel wrought and SLM parts were welded together. The power and speed parameters were investigated. The joints were analyzed in terms of weld bead profile, microstructure, microhardness, and tensile test. The efficiency of the welding process was evaluated through the line energy input versus the weld molten area.
引用
收藏
页码：209 / 216
页数：8
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