Impact Factor:4.7
DOI number:10.1016/j.matchar.2018.11.023
Affiliation of Author(s):中南大学粉末冶金研究院
Teaching and Research Group:高温结构材料研究所
Journal:Materials Characterization
Funded by:中国国家重点研究与发展计划（2016YFB0701404），中国国家自然科学基金（NSFC）（51401242），广东省创新和企业家团队介绍（201301G0105337290），中南大学科学研究创业资金（202045001）
Key Words:Nickel-base superalloy, Powder metallurgy, Hot workability, Processing map
Abstract:Optimizing hot workability and processing parameters of the difficult-to-work powder metallurgy (P/M) superalloy is critical to obtain a desired component through thermo-mechanic processing (TMP). In this study, a P/M superalloy with tailored grain structure and gamma' particle was prepared through atomization and hot isostatic pressing, then thermal compression tests were performed to evaluate its hot workability based on processing maps and microstructure evolution. Considering the friction and temperature variations during deformation, the flow data were corrected via an integrated method, to construct dependable processing maps. The results illustrated that the P/M superalloy prepared by the modified processing method presents superior hot workability, comparing with the P/M superalloys produced by different routes.
Co-author:Yunping Li, Guoai He, Yan Nie, Liang Jiang
First Author:Liming Tan
Indexed by:Article
Correspondence Author:Feng Liu
Discipline:Engineering
First-Level Discipline:冶金
Volume:147
Page Number:340-352
ISSN No.:1044-5803
Translation or Not:no