为提高工程结构用高强钢的低周疲劳性能,通过光学显微镜、扫描电子显微镜、X射线衍射仪、疲劳试验等方法,研究了两相区热处理工艺条件下工程结构用钢的显微组织演变及低周疲劳断裂行为.结果表明:两相区热处理组织由细小且形状不规则的回火态马氏体与条带状铁素体组成,马氏体体积分数约为61.7％,残余奥氏体体积分数为2％～5％.试样具有优良的综合性能,与传统调质工艺相比,具有较低的屈强比及较高的低温冲击韧性.同时,两相区热处理后呈现出较高的抗低周疲劳性能,因为塑性变形能力提高,降低了过早形成疲劳裂纹的概率并减小裂纹扩展速率,使高应变低周疲劳性能提高.
参考文献
| [1] | Chakraborti PC;Mitra MK.Microstructure and tensile properties of high strength duplex ferrite-martensite (DFM) steels[J].Materials Science & Engineering, A. Structural Materials: Properties, Misrostructure and Processing,20071-2(1-2):123-133. |
| [2] | 李晓林;余伟;朱爱玲;武会宾;万德成;张杰.亚温调质对F550级船板钢低温韧性的影响[J].材料热处理学报,2012(12):100-104. |
| [3] | Mohsen ASADI ASADABAD;Massoud GOODARZI;Shahram KHEIRANDISH.Kinetics of Austenite Formation in Dual Phase Steels[J].ISIJ International,20089(9):1251-1255. |
| [4] | P. Movahed;S. Kolahgar;S.P.H. Marashi;M. Pouranvari;N. Parvin.The effect of intercritical heat treatment temperature on the tensile properties and work hardening behavior of ferrite–martensite dual phase steel sheets[J].Materials Science & Engineering, A. Structural Materials: Properties, Misrostructure and Processing,20091/2(1/2):1-6. |
| [5] | Haiwen Luo;Jie Shi;Chang Wang.Experimental and numerical analysis on formation of stable austenite during the intercritical annealing of 5Mn steel[J].Acta materialia,201110(10):4002-4014. |
| [6] | 王俊丽;钟平;凌斌.回火温度对1.23C-12Ni-14Co-3Cr-1Mo钢逆转奥氏体的影响[J].材料科学与工艺,2003(1):81-84. |
| [7] | Das, D;Chattopadhyay, PP.Influence of martensite morphology on the work-hardening behavior of high strength ferrite-martensite dual-phase steel[J].Journal of Materials Science,200911(11):2957-2965. |
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%