Enhanced thermal stability and ductility in a nanostructured Ni-based alloy. (December 2017)

• Record Type: Journal Article
• Authors: Sun, Yanle; Fu, Liming; Fu, Zhiqiang; Shan, Aidang; Lavernia, Enrique J.
• Is Part Of: Scripta materialia. Number 141(2017)
• Page Start: 1
• Page End: 5
• Publication Date: 2017-12
• Subjects: Thermal stability -- Nanostructured alloys -- Ductility -- Nano-precipitation; Materials -- Periodicals; Metallurgy -- Periodicals; Metalen; Legeringen; Materiaalkunde; Metals, metalworking and machinery industries; Metals; Electronic journals; 620.11
• DOI: 10.1016/j.scriptamat.2017.07.013
• Languages: English
• ISSNs: 1359-6462

Abstract

Abstract: In this investigation we address the question of whether it is possible to simultaneously enhance the ductility and thermal stability of nanostructured (NS) Ni-based alloy by using an approach that involves the introduction of nano-precipitates. To address this question, both NS and ultra-fine grained Ni-based alloys with nanoscale γ'-precipitates were obtained via heat treatment of single-phase NS Ni-based alloy (~ 50 nm). Our results show that the thermally-stable γ'-precipitates contribute to both ductility and a remarkably high thermal stability close to 700 °C (0.62 T m ). The underlying mechanisms that are believed to be responsible for this behavior are discussed. Graphical abstract: