Shen, L., Zhou, J., Xiong, Y.-B., Zhang, J.-S., Lu, X.-Z., Meng, Y.
56604527400;56510510800;57194135625;56199032900;56688778000;55799357000;
Study on the combination of cobalt-based superalloy and ferrous alloys by bimetal-layer surfacing technology in refabrication of large hot forging dies
(2017) Journal of Alloys and Compounds, 714, pp. 338-347. 被引用 3 次.
https://www.scopus.com/inward/record.uri?eid=2-s2.0-85018845566&doi=10.1016%2fj.jallcom.2017.04.253&partnerID=40&md5=1993d3ec8689e5652a22ebf1f2f5681b

DOI: 10.1016/j.jallcom.2017.04.253
归属机构: College of Materials Science and Engineering, Chongqing University, Chongqing, China;
Department of Industrial and Systems Engineering, The Hong Kong Polytechnic University, Hong Kong
摘要: Bimetal-layer surfacing intensifying the working area of die by welding materials with gradient mechanical properties is an effective fabrication and refabrication technology for hot forging dies with low cost and a short cycle. Owing to the extremely high operating temperature and large stress of large hot forging dies, the selection of welding materials is quite important. In consideration of the excellent high-temperature performance of cobalt-based superalloy, a cobalt-based superalloy welding material, Co03 was designed in this study to be combined with ferrous alloys with outstanding low-temperature mechanical properties and low price to realized effective refabrication of large hot forging dies by bimetal-layer surfacing. Refabrication of dies and subsequent hot forging processes were simulated physically by bimetal-layer welding conducted on 5CrNiMo blocks and heat treatments. Compared with the combination of two ferrous alloys (JXHC30 and JXHC15), the combination of Co03 and JXHC15 exhibited more stable microstructure and mechanical properties in extreme operating conditions. To verify the feasibility of the combination of JXHC15 and Co03 in refabrication of hot forging dies through bimetal-layer surfacing, a pair of large hot forging dies were refabricated and employed in forging production. The service lives of refabricated dies were improved by dozens of times, compared with the former homogeneous 5CrNiMo dies. © 2017 Elsevier B.V.
作者关键字: Bimetal-layer surfacing;  Cobalt-based superalloy;  Die refabrication;  Mechanical properties
索引关键字: Bimetals; Cobalt; Forging; Hot working; Iron; Iron alloys; Mechanical properties; Superalloys; Temperature; Welding, Cobalt-based superalloy; High operating temperature; High temperature performance; Hot forging process; Microstructure and mechanical properties; Operating condition; Surfacing technology; Welding materials, Dies
通讯地址: Meng, Y.; College of Materials Science and Engineering, Chongqing UniversityChina; 电子邮件: mengyi@cqu.edu.cn
出版商: Elsevier Ltd
ISSN: 09258388
CODEN: JALCE
原始文献语言: English
来源出版物名称缩写: J Alloys Compd
文献类型: Article
来源出版物: Scopus