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| Aermet100钢高温变形动态再结晶晶粒演变行为 |
| High Temperature Deformation Behavior of Dynamic Recrystallization Grains Evolution in Aermet100 Steel |
| Received:April 07, 2016 Revised:May 10, 2016 |
| DOI：10.3969/j.issn.1674-6457.2016.03.003 |
| 中文关键词: 超高强度钢 动态再结晶 晶粒尺寸 Zener-Hollomon参数 |
| 英文关键词: ultra-high strength steel dynamic recrystallization grain size Zener-Hollomon parameter |
| 基金项目: |
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| 中文摘要: |
| 目的 研究高温变形对合金动态再结晶晶粒尺寸的影响。方法 利用Gleeble 3500热模拟试验机对 Aermet100 超高强度钢进行了热模拟压缩， 分析了动态再结晶晶粒在变形温度为 800~1040 ℃、 应变速率为0.01~10 s-1条件下的演变行为。结果 研究发现， Aermet100钢动态再结晶晶粒随变形温度的升高而增大， 随应变速率的增大而减小， 高温、 低应变速率变形后获得的动态再结晶晶粒尺寸较大， 再结晶充分； 低温、 高应变速率获得的动态再结晶晶粒尺寸细小， 但再结晶不完全。结论 根据实验数据， 建立了动态再结晶晶粒尺寸随Zener-Hollomon参数变化的理论模型，为Aermet100钢锻造工艺优化提供了理论依据。 |
| 英文摘要: |
| Hot compression tests of Aermet100 ultra-high strength steel were studied on a Gleeble-3800 thermo-mechanical simulator and dynamic recrystallization grains evolution was analyzed with compression tests at deformation temperatures of 800~1040 ℃ and strain rates of 0.01~10 s-1. The results indicated that dynamic recrystallization grains of Aermet100 steel increased with deformation temperature rising and decreased with strain rate growing. The large dynamic recryllization grains were obtained at high temperatures and low strain rates， and the small grains were obtained at low temperatures and high strain rates， besides recrystallization was incomplete in this situation. According to the experimental data， the theoretical model of dynamic recrystallization grains with the Zener-Hollomon parameter changes in Aermet100 steel was established and a theoretical basis was provided for Aermet100 steel forging process optimization. |
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