Microstructure evolution of alloy 617B for 700 ℃ ultra-supercritical boilers during cold deformation and annealing treatment

被引：0
|
作者：
Jiang H. [1 ]
Dong J.-X. [1 ]
Zhang M.-C. [1 ]
Yao Z.-H. [1 ]
机构：
[1] School of Material Science and Engineering, University of Science and Technology Beijing, Beijing
来源：
Zhongguo Youse Jinshu Xuebao/Chinese Journal of Nonferrous Metals | 2017年 / 27卷 / 07期
关键词：
Annealing; Cold rolling; Nickel-base superalloy; Static recrystallization;
D O I：
10.19476/j.ysxb.1004.0609.2017.07.09
中图分类号：
学科分类号：
摘要：
Cold deformation has an important effect on the dimensional accuracy, microstructure and mechanical properties of alloy 617B pipes. The cold deformation characteristic of alloy 617B tube was investigated by single-pass cold rolling tests of different deformation degrees. The cold rolled alloy 617B was annealed under different conditions. The microstructure evolution mechanism was investigated, and the equation of recrystallized grain growth during annealing was established. The results shows that the grain size of alloy 617B tends to be uneven as a result of carbide strips. The size of recrystallized grain is mainly controlled by annealing temperature and the grain size predicted by the proposed grain model agrees well with the experimental results. The grain size is mostly uniform when the annealing treatment is (1140℃, 10 min) with the cold rolling reduction of 20%. © 2017, Science Press. All right reserved.
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页码：1385 / 1394
页数：9
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