Reviews on the Study of Microstructure and Properties of ATI 718Plus Superalloy

被引：0
|
作者：
Zhang J. [1 ]
Li J. [1 ]
Peng Y. [1 ]
Xia X. [1 ,2 ]
Liu C. [1 ]
Ding J. [1 ]
Chen X. [1 ]
Liu Y. [2 ]
机构：
[1] School of Material Science and Engineering, Hebei University of Technology, Tianjin
[2] School of Material Science and Engineering, Tianjin University, Tianjin
来源：
Cailiao Daobao/Materials Reports | 2022年 / 36卷 / 04期
基金：
中国国家自然科学基金;
关键词：
718Plus alloy; Chemical composition; Heat treatment regime; Hot deformation; Work ability;
D O I：
10.11896/cldb.20050167
中图分类号：
学科分类号：
摘要：
ATI 718Plus (hereafter referred to as 718Plus) is an age-strengthened nickel-based wrought superalloy according to the improved IN718 superalloy, which has been widely used in hot end components for aero engines. The alloy originally introduced in the wrought state, as the demand for large and complex components in the aerospace sector increased, the wrought alloy could no longer meet the practical requirements, so the cast 718Plus alloy was developed by increasing the Nb content based on the wrought alloy and its microstructure, welding properties and tensile properties were investigated. The chemical composition and forming process of as-wrought and as-cast alloys lead to different microstructures and properties, and it is important to clarify the internal relationship between microstructure and properties of the two alloys. This paper reviews the progress of microstructure control and properties of the wrought and cast 718Plus alloys in recent years, including the influence of element contents and distribution state on the microstructure of the alloys, the function of heat treatment regime on the distribution state of γ' and η phases, and the relationship between hot deformation process and the microstructure of the alloys. As a result, the optimum hot processing parameters are obtained, the mechanism of service environment on creep, fatigue, welding and oxidation resistance of alloy is summarized, and the problems and development trend in the process of alloy research are analyzed eventually. © 2022, Materials Review Magazine. All right reserved.
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