Fabricating a martensitic steel layer through double-wire arc directed energy deposition for in-situ cladding

被引：0
|
作者：
Kong, Haoyu [1 ,2 ]
Liu, Yibo [1 ,2 ]
Song, Chenyu [1 ,2 ]
Zhang, Qinghua [1 ,2 ]
Sun, Qi [1 ,2 ]
Zhao, Yongqing [1 ,2 ]
Sun, Qingjie [1 ,2 ]
机构：
[1] Harbin Inst Technol, State Key Lab Adv Welding & Joining, Harbin, Peoples R China
[2] Harbin Inst Technol Weihai, Shandong Prov Key Lab Special Welding Technol, Weihai, Peoples R China
来源：
SCIENCE AND TECHNOLOGY OF WELDING AND JOINING | 2025年 / 30卷 / 02期
基金：
中国国家自然科学基金;
关键词：
Surfacing; directed energy deposition; gas metal arc; martensitic steel; mechanical properties; corrosion resistance;
D O I：
10.1177/13621718251323309
中图分类号：
T [工业技术];
学科分类号：
08 ;
摘要：
Drawing inspiration from the welding of dissimilar steels, this study introduces an innovative approach to preparing martensitic steel through heterogeneous double-wire arc directed energy deposition. Two gas metal arc torches served as heat sources, with employing ER316L stainless steel wire and ER70-G low alloy steel wire at respective feed speeds of 6 m/min and 4 m/min as feedstock. A 6-pass surfacing layer component is fabricated. The evaluation of the microstructure was done using OM, SEM, EDS, and EBSD, revealing a substantial presence of lath martensite (97%) complemented by austenite (3%). Further mechanical properties and corrosion resistance were analysed, showing desirable hardness (408 +/- 8 HV), strength (1233 +/- 32 MPa), ductility (11.2 +/- 1.3%), and corrosion resistance (2.0 mu A/cm2).
引用
收藏
页码：89 / 96
页数：8
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