Shen, L., Zhou, J., Ma, X., Lu, X.Z., Tu, J.W., Shang, X., Gao, F., Zhang, J.S.
56604527400;56510510800;57111057000;56688778000;55967555400;55754767700;57111192700;56199032900;
Microstructure and mechanical properties of hot forging die manufactured by bimetal-layer surfacing technology
(2017) Journal of Materials Processing Technology, 239, pp. 147-159. 被引用 7 次.
https://www.scopus.com/inward/record.uri?eid=2-s2.0-84983558970&doi=10.1016%2fj.jmatprotec.2016.08.020&partnerID=40&md5=fd797f82c13c9c7c409e0c94dd68518f

DOI: 10.1016/j.jmatprotec.2016.08.020
归属机构: School of Materials Science and Engineering, Chongqing UniversityChongqing  400044, China;
Department of Industrial and Systems Engineering, The Hong Kong Polytechnic UniversityHong Kong S.A.R, China;
School of Mathematical Statistics, Chongqing University, Chongqing, 400044, China;
Division of Advanced Manufacturing, Graduate School at Shenzhen, Tsinghua University, Shenzhen, 518055, China
摘要: The temperature field and thermal cycling characteristics of a cast-steel matrix die of automobile crankshaft were predicted. The hot forging die was divided into three temperature regions, i.e., surfacing temperature fluctuation region (0–3 mm in thickness), near surfacing temperature gradient region (3–20 mm in thickness) and matrix temperature balanced region (above 20 mm in thickness), and their temperatures were distributed in high, medium and low-tempered temperature zones respectively. The influences of temperature distribution on the microstructure and mechanical properties of the forging die before and after service were studied. The tempered martensite of strengthened layer decomposed and the coarse grain appeared after service. The protruding part of the ribbed slab was easy to propagate fatigue crack, leading to significant decreasing of tensile strength and impact properties. The tempered martensite and lower banite increased in transition layer, the mechanical properties under high temperatures decreased obviously. The strengthening of hardened structure in weld zone was reduced and the coarse grain structure disappeared, this enabled the performance of the weld zone was more stable than the cast-steel matrix layer and the transition layer. © 2016 Elsevier B.V.
作者关键字: Bimetal-layer surfacing;  Cast-steel matrix;  Hot forging die;  Microstructure;  Strengthened layer;  Transition layer
索引关键字: Automobile manufacture; Bimetals; Crankshafts; Dies; Forging; Martensite; Mechanical properties; Microstructure; Steel metallurgy; Strengthening (metal); Temperature; Temperature distribution; Tensile strength; Welds, Cast steel; Hot forging; Microstructure and mechanical properties; Strengthened layer; Surfacing technology; Temperature fluctuation; Thermal cycling characteristics; Transition layers, Steel castings
通讯地址: Shen, L.; School of Materials Science and Engineering, Chongqing UniversityChina; 电子邮件: LShen_cqu@163.com
出版商: Elsevier Ltd
ISSN: 09240136
CODEN: JMPTE
原始文献语言: English
来源出版物名称缩写: J Mater Process Technol
文献类型: Article
来源出版物: Scopus