Influence of δ Phase on the Microstructure and Properties of Inconel 625 Superalloy Tubes

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	Influence of δ Phase on the Microstructure and Properties of Inconel 625 Superalloy Tubes
	Gao, Yubi 2; Ding, Yutian 1,2; Meng, Bin 2; Ma, Yuanjun 2; Chen, Jianjun 2; Xu, Jiayu 2
刊名	Xiyou Jinshu Cailiao Yu Gongcheng/Rare Metal Materials and Engineering
	2019-04-01
卷号	48 期号:4 页码:1079-1086
关键词	Grain boundaries Grain size and shape Hardness Microstructure Morphology Needles Scanning electron microscopy Spectrometers Superalloys Twinning Inconel 625 superalloys Microstructure and properties Phase precipitations Pinning effects Solute drag
ISSN号	1002185X
英文摘要	The amount, distribution and morphology of δ phase in Inconel 625 superalloy were controlled by cold deformation and aging treatment. The characteristic of δ phase was characterized by X-ray diffraction (XRD), scanning electron microscopy (SEM) and energy dispersive spectrometer (EDS). The influence of δ phase on the microstructure and properties of Inconel 625 superalloy tubes was investigated. The results show that the average grain size decreases, the deformation uniformity of the grain becomes better gradually, and the hardness increases, with the increase of cold deformation (Ε). The δ phase firstly precipitates at the deformation twin and grain boundaries as well as deformation bands, and then precipitates within the grains. The precipitation of needle δ phase is oriented in two near-orthogonal directions or a lattice-like distribution within the grain, while oriented in two parallel directions at the deformation bands. With the increase of cold deformation, the morphology of δ phase varies gradually from needle to spheroid or short rodlike. The average grain size of the alloy decreases with the increase of cold deformation and the extension of aging time (t). The hardness of the alloy increases with the extension of aging time when the cold deformation is 35%, but there is no obvious change in the hardness of the alloy with the extension of aging time as the cold deformation is more than 50%. © 2019, Northwest Institute for Nonferrous Metal Research. Published by Science Press. All rights reserved
语种	英语
出版者	Rare Metals Materials and Engineering Press
内容类型	期刊论文
源URL	[http://ir.lut.edu.cn/handle/2XXMBERH/113858]
专题	省部共建有色金属先进加工与再利用国家重点实验室
作者单位	1.State Key Laboratory of Advanced Processing and Recycling of Nonferrous Metals, Department of Materials Science and Engineering, Lanzhou University of Technology, Lanzhou; 730050, China 2.State Key Laboratory of Advanced Processing and Recycling of Nonferrous Metals, Lanzhou University of Technology, Lanzhou; 730050, China;
推荐引用方式 GB/T 7714	Gao, Yubi,Ding, Yutian,Meng, Bin,et al. Influence of δ Phase on the Microstructure and Properties of Inconel 625 Superalloy Tubes[J]. Xiyou Jinshu Cailiao Yu Gongcheng/Rare Metal Materials and Engineering,2019,48(4):1079-1086.
APA	Gao, Yubi,Ding, Yutian,Meng, Bin,Ma, Yuanjun,Chen, Jianjun,&Xu, Jiayu.(2019).Influence of δ Phase on the Microstructure and Properties of Inconel 625 Superalloy Tubes.Xiyou Jinshu Cailiao Yu Gongcheng/Rare Metal Materials and Engineering,48(4),1079-1086.
MLA	Gao, Yubi,et al."Influence of δ Phase on the Microstructure and Properties of Inconel 625 Superalloy Tubes".Xiyou Jinshu Cailiao Yu Gongcheng/Rare Metal Materials and Engineering 48.4(2019):1079-1086.