利用Gleebl-3500热力模拟试验机,在温度为1 123～1 423 K,应变速率为0.1～10 s-1,真应变为0.8的条件下,对一种传动部件用高强度渗碳钢(SAE9310钢)进行了高温轴向压缩试验,测得了SAE9310钢的高温流变曲线,并观察其变形后的显微组织.试验结果表明,SAE9310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;SAE9310钢在真应变为0.8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,当热变形温度高于1 323 K时,应变速率在0.1～10 s-1范围内,试验钢均会发生动态完全再结晶;测得9310钢的热变形激活能Q值为416.78 kJ/mol,并确立了其热变形方程.
参考文献
| [1] | 周凤云,李熙章.高强度渗碳钢制构件的断裂分析[J].理化检验-物理分册,2003(04):206-209. |
| [2] | Pentti L;Maccagno T;Jonas J J .Softening and Flow Stress Behavior of Nb Microalloyed Steels During Hotroling Simulation[J].ISU International,1995,35(12):1523. |
| [3] | McQueen H J;Yue S;Ryan N D et al.Hot Working Characteristics of Steels in Austenitics State[J].Journal of Materials Processing Technology,1995,53(1-2):293. |
| [4] | 王国栋;刘振宇.高强度低合金钢的控制轧制与控制冷却[M].北京:冶金工业出版社,1992 |
| [5] | Parag M M;Sellars C M .Flow Stress in Hot Extrusion of Commercial-Purity Aluminum[J].Journal of the Institute of Metals,1973,101(05):137. |
| [6] | Jonas J J;Sellars C M;Tegart W J .Strength and Structure Under Hot Working Conditions[J].International Metals Reviews,1969,130(14):1. |
| [7] | ZHANG Sheng-hua;ZHAN Zhen-zhen;ZHAO Xiang-wei .Constitutive Equations for Hot Deformation of HA164252422 Alloy[J].Mining and Metallurgical Engineering,2004,24(06):63. |
| [8] | Jiantao Liu;Hongbing Chang .Investigation on hot deformation behavior of AISI T 1 high-speed steel[J].Materials Characterization,2000(3):175-186. |
上一张
下一张
上一张
下一张
计量
- 下载量()
- 访问量()
文章评分
- 您的评分：
-
10%
-
20%
-
30%
-
40%
-
50%