Effects of heating and hot extrusion process on microstructure and properties of inconel 625 alloy

doi:10.1007/s11595-016-1540-3

	Effects of heating and hot extrusion process on microstructure and properties of inconel 625 alloy
	Liu Dexue1,2 ; Cheng Xiaowei 1,2; Zhang Xiao1,2 ; Ding Yutian1,2
	2016-12-01
发表期刊	Journal Wuhan University of Technology, Materials Science Edition
ISSN	10002413
卷号	31 期号:6 页码:1368-1376
摘要	The effects of the heating process and hot extrusion on the microstructure and properties of inconel 625 alloy were studied. The experimental results showed that the properties of Inconel 625 alloy could be improved through the heating process and hot extrusion concomitant with a reduced corrosion rate. The M23C6 carbide, generated in the heating process, was retained and distributed at the grain boundary during the process of hot extrusion, which had an important influence on both elongation and corrosion resistance. The improvement of the comprehensive properties of the material, as measured by a tensile test at room temperature, was correlated with the dissolution of segregation Nb. A typical ductile fracture changed to a cleavage fracture where secondary cracks could be clearly seen. With the increase of the extrusion ratio, the real extrusion temperature was higher, which led to more dissolution of the M23C6 carbide, decreased the number of secondary cracks, enhanced the effect of solid solution strengthening, and reduced the intergranular corrosion rate. Under the condition of a high extrusion ratio and a high extrusion speed, the less extrusion time made it possible to obtain organization with a smaller average grain size. Moreover, in this case, the M23C6 carbide and segregated Nb did not have enough time to diffuse. Thus all samples exhibited medium strengths and corrosion rates after extrusion. © 2016, Wuhan University of Technology and Springer-Verlag Berlin Heidelberg.
关键词	Carbides Corrosion rate Corrosion resistance Cracks Dissolution Ductile fracture Extrusion Grain boundaries Heating Intergranular corrosion Mechanical properties Tensile testing Textures Comprehensive properties Extrusion temperatures Hot extrusion Hot extrusion process Inconel 625 alloys Micro-structure evolutions Microstructure and properties Solid solution strengthening
DOI	10.1007/s11595-016-1540-3
收录类别	EI ; SCIE
语种	英语
WOS研究方向	Materials Science
WOS类目	Materials Science, Multidisciplinary
WOS记录号	WOS:000393051300032
出版者	Wuhan Ligong Daxue
EI入藏号	20165203164066
EI主题词	Tensile strength
EI分类号	539.1 Metals Corrosion - 802.3 Chemical Operations - 804.2 Inorganic Compounds - 951 Materials Science
来源库	Compendex
分类代码	539.1 Metals Corrosion - 802.3 Chemical Operations - 804.2 Inorganic Compounds - 951 Materials Science
引用统计	被引频次：9[WOS] [WOS记录] [WOS相关记录]
文献类型	期刊论文
条目标识符	https://ir.lut.edu.cn/handle/2XXMBERH/112957
专题	材料科学与工程学院外国语学院省部共建有色金属先进加工与再利用国家重点实验室
通讯作者	Liu Dexue
作者单位	1.Lanzhou Univ Technol, Sch Mat Sci & Engn, Lanzhou 730050, Peoples R China; 2.State Key Lab Adv Proc & Recyling Nonferrous Met, Lanzhou 730050, Peoples R China
第一作者单位	材料科学与工程学院
通讯作者单位	材料科学与工程学院
第一作者的第一单位	材料科学与工程学院
推荐引用方式 GB/T 7714	Liu Dexue,Cheng Xiaowei,Zhang Xiao,et al. Effects of heating and hot extrusion process on microstructure and properties of inconel 625 alloy[J]. Journal Wuhan University of Technology, Materials Science Edition,2016,31(6):1368-1376.
APA	Liu Dexue,Cheng Xiaowei,Zhang Xiao,&Ding Yutian.(2016).Effects of heating and hot extrusion process on microstructure and properties of inconel 625 alloy.Journal Wuhan University of Technology, Materials Science Edition,31(6),1368-1376.
MLA	Liu Dexue,et al."Effects of heating and hot extrusion process on microstructure and properties of inconel 625 alloy".Journal Wuhan University of Technology, Materials Science Edition 31.6(2016):1368-1376.