在Gleeble 1500热模拟试验机上,通过应力松弛实验研究了低碳贝氏体钢在不同工艺条件下奥氏体的软化行为,得到了不同温度、不同变形速率下的再结晶动力学曲线.同时,采用常规的双道次压缩实验得到了变形温度1000 ℃,应变速率0.1 s-1时,不同变形间隔的静态软化率,与应力松弛实验结果吻合得很好.说明应力松弛法是测试静态软化率的一种有效方法,可以大幅度地减少实验工作量.
参考文献
| [1] | Karjalainen L P .Stress relaxation method for investigation of softening kinetics in hot deformation[J].Materials Science and Technology,1995,11(06):557-565. |
| [2] | Andrade H L;Akben M G;Jonas J J .Effect of molybdenum,niobium,and vanadium on static recovery and recrystallization and on solute strengthening in microalloyed steels[J].Metallurgical and Materials Transactions A:Physical Metallurgy and Materials Science,1983,14(08):1967-1976. |
| [3] | Laasraoui A;Jonas J J .Recrystallization of austenite after deformation at high temperatures and strain rate-analysis and modeling[J].Metallurgical and Materials Transactions A:Physical Metallurgy and Materials Science,1991,22(01):151-160. |
| [4] | Kliber J;Schindler I .Recrystallization/precipitation behaviour in microalloyed steels[J].Journal of Materials Processing Technology,1996,60:597-602. |
| [5] | 王立民,宁小智,刘宁,刘正东,杨钢.热变形403Nb钢的再结晶动力学[J].材料热处理学报,2010(01):57-61. |
| [6] | 陈庆军,康永林,孙浩,于浩.X70管线钢热变形奥氏体的静态再结晶行为[J].北京科技大学学报,2007(12):1212-1215. |
| [7] | 张斌,张鸿冰.35CrMo结构钢的热变形行为[J].金属学报,2004(10):1109-1114. |
| [8] | 李智,王宙,郭丽环,王国栋,刘相华.贝氏体型非调质钢热变形奥氏体的静态再结晶[J].钢铁研究,2002(01):26-28. |
| [9] | Liu W J;Jonas J J .A stress relaxation method for following carbonitride precipitation in austenite at hot working temperatures[J].Metallurgical and Materials Transactions A:Physical Metallurgy and Materials Science,1988,19(06):1403-1413. |
| [10] | 王昭东,曲锦波,刘相华,王国栋.松弛法研究微合金钢碳氮化物的应变诱导析出行为[J].金属学报,2000(06):618-621. |
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%