On the γ′ precipitates of the normal and inverse Portevin-Le Châtelier effect in a wrought Ni-base superalloy. Issue 1 (January 2019)

• Record Type: Journal Article
• Authors: Wang, Xinguang; Han, Guoming; Cui, Chuanyong; Guan, Shuai; Li, Jinguo; Hou, Guichen; Zhou, Yizhou; Sun, Xiaofeng
• Is Part Of: Journal of materials science & technology. Volume 35:Issue 1(2019)
• Page Start: 84
• Page End: 87
• Publication Date: 2019-01
• Subjects: Normal and inverse PLC effect -- γʹ precipitates -- Dynamic strain aging -- Critical strain -- Wrought Ni-base superalloy; Metals -- Periodicals; Materials science -- Periodicals; Materials science; Metals; Periodicals; 620.1105
• DOI: 10.1016/j.jmst.2018.09.014
• Languages: English
• ISSNs: 1005-0302

Abstract

Abstract: The Portevin-Le Châtelier (PLC) effects in a wrought Ni-base superalloy with different γʹ precipitates contents have been investigated. Detailed analysis on the serration type of the tensile curves indicates that the γʹ precipitates have a decisive influence on the transformation from normal to inverse PLC behavior, which is rarely proposed in other works. It is considered that the γʹ precipitates play the same role in PLC effect as temperature and strain rate for the investigated wrought Ni-base superalloy.