| 取向硅钢韧脆转变温度及影响因素 |
| |
| 引用本文： | 李莉,贾志伟,张一凡,罗理,蒋奇武. 取向硅钢韧脆转变温度及影响因素[J]. 金属热处理, 2021, 46(12): 214-217. DOI: 10.13251/j.issn.0254-6051.2021.12.035 |
| |
| 作者姓名： | 李莉 贾志伟 张一凡 罗理 蒋奇武 |
| |
| 作者单位： | 鞍钢集团钢铁研究院,辽宁鞍山 114009;鞍钢股份冷轧厂,辽宁鞍山 114009;鞍钢股份制造管理部,辽宁鞍山 114044 |
| |
| 摘 要： | 以鞍钢0.27 mm规格高磁感取向硅钢板为研究对象,通过测量不同温度下常化样品的力学性能,结合微观组织和断口形貌观察,确定其韧脆转变温度及影响因素。结果表明:该取向硅钢临界断裂强度约为590 MPa,韧脆转变温度区间为60~80 ℃。在0~100 ℃测试温度范围内,随温度升高,磷元素偏聚浓度由90%左右降低至65%左右,相应平衡时间短,有利于提高晶界结合强度并弱化脆断倾向。此外,常化组织晶粒粗化和铁素体与珠光体不均匀变形产生的微裂纹是脆化的主要组织因素,不利于取向硅钢的冷轧加工。
|
| 关 键 词： | 取向硅钢 韧脆转变温度 断口形貌 微观组织 力学性能 |
| 收稿时间： | 2021-07-26 |
Ductile-brittle transition temperature of a grain-oriented silicon steel and its influencing factors |
| |
| Li Li,Jia Zhiwei,Zhang Yifan,Luo Li,Jiang Qiwu. Ductile-brittle transition temperature of a grain-oriented silicon steel and its influencing factors[J]. Heat Treatment of Metals, 2021, 46(12): 214-217. DOI: 10.13251/j.issn.0254-6051.2021.12.035 |
| |
| Authors: | Li Li Jia Zhiwei Zhang Yifan Luo Li Jiang Qiwu |
| |
| Affiliation: | 1. Iron & Steel Research Institutes of Ansteel Group Corporation, Anshan Liaoning 114009, China;2. Cold Strip Works of Ansteel Limited Company, Anshan Liaoning 114009, China;3. Product Development Department of Ansteel Limited Company, Anshan Liaoning 114044, China |
| |
| Abstract: | Ductile-brittle transition temperature and its influencing factors of 0.27 mm high magnetic grain-oriented silicon steel plate of Ansteel were determined by measuring the mechanical properties of specimen at different normalizing temperatures and observing the microstructure and fracture morphology. The results show that the critical breaking strength of the tested steel is about 590 MPa, and the ductile-brittle transition temperature range is 60-80 ℃. With the increase of test temperature in the range of 0-100 ℃, the phosphorus concentration decreases from about 90% to about 65%, and the corresponding equilibrium time is short, which is beneficial to improve the grain boundary bonding strength and to weaken the brittle fracture tendency. In addition, the coarsening of normalized grains and the microcracks caused by uneven deformation of ferrite and pearlite are the main structural factors of embrittlement, which are not conducive to cold rolling of grain-oriented silicon steel. |
| |
| Keywords: | grain-oriented silicon steel ductile-brittle transition temperature fracture morphology microstructure mechanical properties |
| 本文献已被 万方数据 等数据库收录！ |
| 点击此处可从《金属热处理》浏览原始摘要信息 |
|
点击此处可从《金属热处理》下载免费的PDF全文 |
|
