研究了不同热轧工艺对TRIP钢热轧组织与力学性能的影响,以及热轧组织与力学性能对退火后组织与力学性能的遗传性.结果表明:卷取温度对热轧组织与力学性能的影响最大,不同的卷取温度得到了两种不同的热轧组织,①铁素体+珠光体+贝氏体组织,②铁素体+贝氏体+奥氏体组织;第一种热轧组织经过冷轧和退火后晶粒大大的细化,力学性能得到了很大提升,奥氏体含量和含碳量都大幅提升,无组织遗传性.第二种热轧组织退火后组织类型不变,晶粒度变化不大,奥氏体含量和含碳量小幅上升,表现为很强的组织遗传性与力学性能遗传性.
The influence of hot rolling process on microstructure and mechanical property of a TRIP steel, and the heredity of the microstructure and property in the hot rolled TRIP steel after annealing was investigated. The results show that coiling temperature is the key factor for microstructure and mechanical property of the hot rolled steel, and two different kinds of microstructure are obtained under different coiling temperatures, one is composed of ferrite, pearlite and bainite, and the other consists of ferrite, bainite and austenite. After annealing, the grains of the first kind of hot rolling microstructure are greatly refined, and mechanical properties of the hot rolled TRIP steel are evidently improved, and the fraction of austenite and its carbon content are also increased significantly, and no heredity of the microstructure is observed. However, little changes in grain size, mechanical properties, fraction and carbon content of retained austenite for the TRIP steel with the second kind of hot rolling microstructure after annealing treatment are detected, exhibiting obvious heredity of microstructure.
参考文献
| [1] | 景财年,王作成,韩福涛.相变诱发塑性的影响因素研究进展[J].金属热处理,2005(02):26-31. |
| [2] | Stephane G;Philippe H;Francis D.Effect of hot-rolling conditions on the tensile properties ofmultiphase steels exhibiting a TRIP effect[M].Aachen:Wissenschaftsverlas Mainz Gmbh,2002:280-2286. |
| [3] | A.ZAREI HANZAKI .Retained Austenite Characteristics in Thermomechanically Processed Si-Mn Transformation-Induced Plasticity Steels[J].Metallurgical and Materials Transactions, A. Physical Metallurgy and Materials Science,1997(11):2405-2415. |
| [4] | Zhao L;Dijk N H V;Brock E et al.Magnetic and X-ray diffraction measurements for the determination of retained austenite in TRIP steels[J].Materials Science and Engineering A,2001,313(1 -2):145-1152. |
| [5] | Ashok Kumar Srivastava;G. Jha;N. Gope .Effect of heat treatment on microstructure and mechanical properties of cold rolled C-Mn-Si TRIP-aided steel[J].Materials Characterization,2006(2):127-135. |
| [6] | 熊自柳,江海涛,蔡庆伍,唐荻,刘仁东.消除TRIP钢屈服平台的预拉伸实验及微观机理[J].北京科技大学学报,2008(04):379-382. |
| [7] | 江海涛,唐荻,刘强,刘仁东,严玲.TRIP钢中残余奥氏体及其稳定性的研究[J].钢铁,2007(08):60-63,82. |
| [8] | S. Zaefferer;J. Ohlert;W. Bleck .A study of microstructure, transformation mechanisms and correlation between microstructure and mechanical properties of a low alloyed TRIP steel[J].Acta materialia,2004(9):2765-2778. |
| [9] | Sugimoto K;Kohayashi M;Shirasawa H .Effects of second phase morphology on retained austenite morphology and tensile properties in a TRIP aided dual phase steel sheet[J].ISIJ International,1993,33(07):775-7782. |
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