Solidification structures and phases in wire arc additive manufactured C250 maraging steel

被引：13
|
作者：
Guo, Lulu [1 ]
Zhang, Lina [1 ]
Andersson, Joel [2 ]
Ojo, Olanrewaju [1 ]
机构：
[1] Univ Manitoba, Dept Mech Engn, Winnipeg, MB, Canada
[2] Univ West, Dept Engn Sci, Trollhattan, Sweden
来源：
MATERIALS SCIENCE AND TECHNOLOGY | 2023年 / 39卷 / 05期
基金：
加拿大自然科学与工程研究理事会;
关键词：
Wire arc additive manufacturing; C250 maraging steel; Transmission electron microscopy; Laves phase Fe2Ti particles; Strengthening precipitates; MECHANICAL-PROPERTIES; QUALITY; DEFECTS;
D O I：
10.1080/02670836.2022.2128577
中图分类号：
T [工业技术];
学科分类号：
08 ;
摘要：
Multiple layers of C250 maraging steel were deposited into a single-wall structure by using wire arc additive manufacturing (WAAM). The microstructural characteristics of the as-deposited C250 steel, in terms of solidification structures and phases, were investigated by using optical microscopy, scanning electron microscopy, and transmission electron microscopy (TEM). The results show that lath martensite and austenite phases are formed in the as-deposited C250 steel. Apart from these two phases, Laves phase Fe2Ti particles, which have not been reported in C250 steel, are also observed in the C250 steel produced by the WAAM process. TEM analysis does not reveal the formation of strengthening precipitates in the as-built C250 steel, which is further confirmed by hardness measurement.
引用
收藏
页码：582 / 590
页数：9
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