设计和研究了一种新型高铝(1.8％Al)淬火-碳分配-回火(Q-P-T)高强钢.基于JMatPro 6.0软件和约束条件碳平衡热力学(Constrained Carbon Equilibrium,CCE)模型的模拟计算结果,制定了该钢的热处理工艺,进行了盐浴热处理和力学性能实验,并通过SEM和TEM对实验钢的组织进行了观察与分析.结果表明:Q-P-T实验钢的组织主要由板条马氏体、一定数量的富碳残留奥氏体和弥散分布的碳化物组成,其中马氏体和弥散的碳化物主要提供强化,残留奥氏体则主要起到提高塑性的作用.实验钢经Q-P-T处理后获得了高抗拉强度(1260 MPa)和塑性(18％)的良好匹配且其热处理工艺容易控制,验证了高铝钢采用Q-P-T热处理的可行性.
参考文献
| [1] | Speer J G;Rizzo F C;Matlock D K et al.The "quenching and partitioning" process:Background and recent progress[J].Materials Research,2005,8(04):417-423. |
| [2] | D.V. Edmonds;K. He;E.C. Rizzo .Quenching and partitioning martensite--A novel steel heat treatment[J].Materials Science & Engineering, A. Structural Materials: Properties, Misrostructure and Processing,2006(0):25-34. |
| [3] | 徐祖耀.钢热处理的新工艺[J].热处理,2007(01):1-11. |
| [4] | 徐祖耀.淬火-碳分配-回火（Q-P-T）工艺浅介[J].金属热处理,2009(06):1-8. |
| [5] | T. Y. Hsu;Zuyao Xu .Design of structure, composition and heat treatment process for high strength steel[J].Materials Science Forum,2007(Pt.3):2283-2286. |
| [6] | 胡浙梁,王晓东,王利,戎咏华.新型Q-P-T钢性能及其微观组织[J].材料热处理学报,2010(04):76-80. |
| [7] | De Meyer M;Vanderschueren D;De Cooman B C .Influence of the substitution of Si by Al on the properties of coll rolled C-Mn-Si TRIP steels[J].ISIJ International,1999,39(08):813-824. |
| [8] | 李华瑞.材料X射线衍射分析实用方法[M].北京:冶金工业出版社,1994 |
| [9] | Speer JG;Edmonds DV;Rizzo FC;Matlock DK .Partitioning of carbon from supersaturated plates of ferrite, with application to steel processing and fundamentals of the bainite transformation[J].Current opinion in solid state & materials science,2004(3/4):219-237. |
| [10] | Speer J G;Matlock D K;De Cooman B C et al.Comments on "On the definitions of paraequilibrium and orthoequilibrium" by M Hillert and J Agren[J].Scripta Materialia,2004,50:697-699. |
| [11] | A.J. Clarke;J.G. Speer;M.K. Miller .Carbon partitioning to austenite from martensite or bainite during the quench and partition (Q&P) process: A critical assessment[J].Acta materialia,2008(1):16-22. |
| [12] | X.D. WANG;B.X. HUANG;L. WANG .Microstructure and Mechanical Properties of Microalloyed High-Strength Transformation-Induced Plasticity Steels[J].Metallurgical and materials transactions. A, physical metallurgy and materials science,2008(1):1-7. |
| [13] | Zhong, N;Wang, XD;Wang, L;Rong, YH .Enhancement of the mechanical properties of a Nb-microalloyed advanced high-strength steel treated by quenching-partitioning-tempering process[J].Materials Science and Engineering. A, Structural Materials: Properties, Microstructure and Processing,2009(1/2):111-116. |
| [14] | Bailey J E;Hirsch P B .The dislocation distribution,flow stress,and stored energy in cold-worked polycrystalline silver[J].Philosophical Magazine,1960,5(53):485-497. |
| [15] | KAORI MIYATA;TOMOHIRO OMURA;TAKAHIRO KUSHIDA .Coarsening Kinetics of Multicomponent MC-Type Carbides in High-Strength Low-Alloy Steels[J].Metallurgical and Materials Transactions, A. Physical Metallurgy and Materials Science,2003(8):1565-1573. |
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