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| 二次硬化超高强度钢的热变形行为 | |
| 引用本文： | 厉勇,王春旭,田志凌,刘宪民,傅万堂.二次硬化超高强度钢的热变形行为[J].钢铁,2009,44(6). |
| 作者姓名： | 厉勇 王春旭 田志凌 刘宪民 傅万堂 |
| 作者单位： | 1. 钢铁研究总院结构材料研究所,北京100081;钢铁研究总院先进钢铁流程及材料国家重点实验室,北京100081 2. 钢铁研究总院结构材料研究所,北京,100081 3. 燕山大学亚稳材料制备技术与科学国家重点实验室,河北秦皇岛,066004 |
| 摘 要： | 利用Gleeble-3500热力模拟试验机,在温度为1123～1423K,应变速率为0.5～10s-1的条件下,对航空用高强韧性的二次硬化超高强度钢(AF1410钢)进行了高温轴向压缩试验,测得了AF1410钢的高温流变曲线,并观察了变形后的显微组织。试验结果表明,AF1410钢的流变应力和峰值应变随着变形温度的升高和应变速率的降低而减小;AF1410钢在真应变为0.8,应变速率为0.5～10s-1的条件下,随着变形速率的提高,其发生完全动态再结晶的温度也逐渐升高。当变形速率为10s-1时,其变形温度高于1373K,才会发生完全动态再结晶;AF1410钢的热变形激活能Q值为430.39kJ/mol,并确立了其热变形方程。 |
| 关 键 词： | 超高强度钢 二次硬化 流变应力 热变形激活能 |
Investigation on Hot Deformation Behavior of Secondary Hardening Ultra-High Strength Steel |
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| LI Yong,WANG Chun-xu,TIAN Zhi-ling,LIU Xian-min,FU Wan-tang.Investigation on Hot Deformation Behavior of Secondary Hardening Ultra-High Strength Steel[J].Iron & Steel,2009,44(6). | |
| Authors: | LI Yong WANG Chun-xu TIAN Zhi-ling LIU Xian-min FU Wan-tang |
| Affiliation: | LI Yong 1,2,WANG Chun-xu 1,TIAN Zhi-ling 1,LIU Xian-min 1,FU Wan-tang 3(1.Institute for Structural Materials,Central Iron and Steel Research Institute,Beijing 100081,China,2.State Key Laboratory of Advanced Steel Process and Products,3.State Key Laboratory of Metastable Materials Science and Technology,Yanshan University,Qinhuangdao 066004,Hebei,China) |
| Abstract: | The hot compression deformation behaviors of secondary hardening ultra-high strength AF1410 steel with high strength and toughness has been investigated by using of Gleeble-3500 simulator at the temperature rang of 1 123 K to 1 423 K and at the strain rate of 0.5-10 s-1.The corresponding flow curves have been determined and hot deformed microstructures were observed.The results show that the flow stress and peak strain increase with increasing strain rate or decreasing deformation temperature.At true strain... |
| Keywords: | ultra-high strength steel secondary hardening flow stress activation energy |
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