Fine-grained processing and electron backscatter diffraction (EBSD) analysis of cold-rolled Inconel 617

被引：8
|
作者：
Luo, Junting [1 ,2 ]
Chu, Ruihua [1 ,2 ]
Yu, Wenlu [1 ,2 ]
Chen, Yimin [1 ]
Zhang, Chunxiang [2 ]
机构：
[1] Yanshan Univ, Key Lab Adv Forging & Stamping Technol & Sci, Educ Minist, Qinhuangdao 066004, Hebei, Peoples R China
[2] Yanshan Univ, State Key Lab Metastable Mat Sci & Technol, Qinhuangdao 066004, Hebei, Peoples R China
来源：
JOURNAL OF ALLOYS AND COMPOUNDS | 2019年 / 799卷
基金：
中国国家自然科学基金;
关键词：
Inconel; 617; Cold rolling; Recovery; Recrystallization annealing; Fine-grained processing; CREEP-RUPTURE; BEHAVIOR; TEMPERATURE; DUCTILITY; HELIUM;
D O I：
10.1016/j.jallcom.2019.05.193
中图分类号：
O64 [物理化学（理论化学）、化学物理学];
学科分类号：
070304 ; 081704 ;
摘要：
Fine-grained processing of Inconel 617 sheet was proposed, and microstructural evolution during processing was analyzed. The optimum recovery temperature at 750 degrees C and the best recrystallization annealing temperature at 1000 degrees C were determined by experiments. The optimal fine-grained process comprised heat treatment (750 degrees C x 1 h), first cold rolling (60% reduction rate), high-temperature recovery (750 degrees C x 1 h), second cold rolling (10% reduction rate), and recrystallization annealing (1000 degrees C x 3 h). After recrystallization annealing (1000 degrees C x 3 h), the fine-grained sheet consisted of equiaxed grains with a size of 4-6 mu m. A high proportion of high-angle grain boundaries was observed, and most of the grain orientation spread values were less than 1. The grain recrystallized completely. Twin refinement mechanism played a dominant role in sheet grain refinement. The hardness and tensile mechanical properties of the fine-grained sheet were notably stronger than those of the original sheet. (C) 2019 Elsevier B.V. All rights reserved.
引用
收藏
页码：302 / 313
页数：12
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