Gao, F., Zhou, J., Zhou, J., Shen, L., Zhang, J., Tao, Y.P., Li, M.Y.
57111192700;56510510800;57189252293;56604527400;56199032900;56604577500;57199160587;
Microstructure and properties of surfacing layers of dies manufactured by bimetal-gradient-layer surfacing technology before and after service
(2017) International Journal of Advanced Manufacturing Technology, 88 (5-8), pp. 1289-1297.
https://www.scopus.com/inward/record.uri?eid=2-s2.0-84966694857&doi=10.1007%2fs00170-016-8679-0&partnerID=40&md5=6193a0bce25a658fc5349a7a40bff89c

DOI: 10.1007/s00170-016-8679-0
归属机构: College of Materials Science and Engineering, Chongqing University, Chongqing, 400044, China;
Guangzhou Automobile GroupCo., Ltd, Automobile Engineering Institute, Guangzhou, 510000, China
摘要: The purpose of this article is to investigate the microstructure and mechanical properties of surfacing layers (wear layer and transition layer) of a hot forging die manufactured by the bimetal-gradient-layer surfacing method, which is based on ZG29MnMoNi cast steel before and after forged 5761 parts on a 63MN hot die forging press. The finite element model of a die was established. Subsequently, a simulation was conducted to analyze the temperature field of the die and its cycle features under working conditions. Microstructure and mechanical property were measured. Results indicated that the microstructure of the wear layer mainly consists of temper sorbite, ferrite and carbides. The transition layer before and after service is mainly composed of both temper sobrite, lower bainite, and a small amount of temper martensite. The mechanical properties of wear and transition layers declined significantly after service. The tensile strength, yield strength, reduction of area, and elongation of wear layer declined by 41.6, 32.5, 28.3, and 24.5 %, respectively. With those indexes the transition layer decreased by 36.6, 34, 24.4, and 19.8 %, respectively. Microhardness and impact energy of wear and transition layers have showed a decrease of 17, 6 % and 51.2, 32.6 %, respectively. The impact fracture mode of both wear and transition layers is typically intergranular fracture after service. As a conclusion, it was determined that the service process sufficiently influenced the mechanical properties of the surfacing layers. © 2016, Springer-Verlag London.
作者关键字: Microstructure and properties;  Surface welding;  Surfacing layers;  Temperature field
索引关键字: Bimetals; Carbides; Finite element method; Forging; Fracture; Mechanical properties; Microstructure; Temperature; Temperature distribution; Tensile strength; Upsetting (forming), Intergranular fracture; Microstructure and mechanical properties; Microstructure and properties; Reduction of areas; Surface welding; Surfacing layers; Surfacing methods; Surfacing technology, Dies
通讯地址: Gao, F.; College of Materials Science and Engineering, Chongqing UniversityChina; 电子邮件: gaofeicqu@163.com
出版商: Springer London
ISSN: 02683768
CODEN: IJATE
原始文献语言: English
来源出版物名称缩写: Int J Adv Manuf Technol
文献类型: Article
来源出版物: Scopus