Influence of Multi-step Cumulative Deformation on Static Recrystallization of Steel 26Cr2Ni4MoV

被引:42
作者
Ni, L. Y. [1 ]
Kang, P. C. [2 ]
Yu, S. Q. [3 ,4 ]
Liu, Z. B. [4 ]
机构
[1] Guangdong Ocean Univ, Coll Engn, Zhanjiang 524088, Guangdong, Peoples R China
[2] Harbin Inst Technol, Sch Materials Sci & Engn, Harbin 150001, Peoples R China
[3] Xingtai Polytechn Coll, Fac Elect & Mech, Xingtai 054035, Peoples R China
[4] Yanshan Univ, Coll Mech Engn, Qinhuangdao 066004, Peoples R China
来源
ADVANCED MATERIALS SCIENCE AND TECHNOLOGY, PTS 1-2 | 2011年 / 181-182卷
基金
中国国家自然科学基金;
关键词
forging; rotor; static recrystallization; thermo-torsion;
D O I
10.4028/www.scientific.net/AMR.181-182.78
中图分类号
T [工业技术];
学科分类号
08 ;
摘要
Considering the difficulty for the dynamic recrystallization to happen in Steel 26Cr2Ni4MoV, which was used to manufacture low-pressure steam turbine rotors generally, after-forging static recrystallization was studied with the thermo-torsion method. In order to investigate the influence of multi-step cumulative deformation on after-forging static recrystallization of Steel 26Cr2Ni4MoV, the thermo-torsion method was adopted to conduct a constant-temperature four-step torsion test at 900 degrees C. The time gap between each step in the test agreed with that in real production. Results show that the influence of multi-step cumulative deformation on after-forging static recrystallization is almost the same with that of single-step deformation. It means that the nucleation and the growth of after-forging static recrystallization are related mainly to the last deformation and temperature-keeping time. Grain size can be controlled through the last deformation and temperature-keeping time. The findings supply the theoretical foundation for the said-steel controlled forging processes.
引用
收藏
页码:78 / +
页数:2
相关论文
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