| 终轧温度对Cu合金化Fe-18Mn-0.6C TWIP钢微观组织和力学性能的影响 |
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| 引用本文： | 张文文,董福涛,刘云双,田亚强,陈连生.终轧温度对Cu合金化Fe-18Mn-0.6C TWIP钢微观组织和力学性能的影响[J].金属热处理,2022,47(7):102-106. |
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| 作者姓名： | 张文文 董福涛 刘云双 田亚强 陈连生 |
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| 作者单位： | 华北理工大学 教育部现代冶金技术重点实验室, 河北 唐山 063210 |
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| 基金项目： | 国家自然科学基金(51501056);中央引导地方科技发展资金项目(226Z1010G);河北省自然科学基金(E2016209341);唐山市科技计划(18130225a);华北理工大学培育基金(JP201510) |
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| 摘 要： | 采用XRD、光学显微镜、扫描电镜、拉伸试验机和冲击试验机等研究了终轧温度(900 ℃和1000 ℃)对Cu合金化Fe-18Mn-0.6C TWIP钢微观组织和力学性能的影响。结果表明,低温终轧会明显提高TWIP钢的强度,但会使伸长率和强塑积降低;高温终轧更有利于提高TWIP钢塑性和室温冲击性能。高温终轧时可获得较大尺寸的奥氏体晶粒,降低孪生所需的临界应力,具有更高的应变强化能力,拉伸断口和冲击断口的韧窝更大更深,表现出优异的塑性和韧性。
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| 关 键 词： | TWIP钢 终轧温度 形变孪晶 应变硬化率 |
| 收稿时间： | 2022-01-27 |
Effect of finishing rolling temperature on microstructure and mechanical properties of Cu-alloyed Fe-18Mn-0.6C TWIP steel |
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| Zhang Wenwen,Dong Futao,Liu Yunshuang,Tian Yaqiang,Chen Liansheng.Effect of finishing rolling temperature on microstructure and mechanical properties of Cu-alloyed Fe-18Mn-0.6C TWIP steel[J].Heat Treatment of Metals,2022,47(7):102-106. |
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| Authors: | Zhang Wenwen Dong Futao Liu Yunshuang Tian Yaqiang Chen Liansheng |
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| Affiliation: | Key Laboratory of Modern Metallurgy Technology, Ministry of Education, North China University of Science and Technology, Tangshan Hebei 063210, China |
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| Abstract: | Effect of finishing rolling temperature (900 ℃ and 1000 ℃) on microstructure and mechanical properties of Cu-alloyed Fe-18Mn-0.6C TWIP steel was studied by means of XRD, OM, SEM, tensile test and impact test machine.The results show that the strength of TWIP steel is improved obviously with low temperature finishing rolling, but the elongation and product of strength and elongation are reduced.High temperature finishing rolling is more beneficial to improve plasticity and impact property at room temperature of the TWIP steel. Large-size austenite grains can be obtained with high temperature finishing rolling, which reduces the critical stress required by twinning and has higher strain strengthening ability.The dimples on the tensile fracture and impact fracture of the TWIP steel with high temperature are finishing rolling is larger and deeper than that of low temperature finishing rolling, which shows an excellent plasticity and toughness. |
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| Keywords: | TWIP steel finishing rolling temperature mechanical twin strain hardening rate |
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