任永海,赵飞,严琰

• 1:贵州大学材料与冶金学院
• 2:贵州省材料结构与强度重点实验室

摘要(Abstract)：

研究了18Ni(1700 MPa)马氏体时效钢加热—保温过程中晶粒长大的规律。通过回归分析建立了晶粒长大模型,同时验证了该模型的正确性。结果表明:在930~1070℃保温时,晶粒演变主要经历了逆变奥氏体再结晶孕育期、逆变奥氏体再结晶和二次长大3个阶段。在逆变奥氏体再结晶阶段,晶粒会发生明显的细化;在逆变奥氏体再结晶结束后的几十秒内,细化的晶粒将以较大速度发生二次长大,温度越高长大速度越快,但随着时间的延长,晶粒长大速度又会越来越慢。晶粒尺寸预测值与实测值吻合较好。

关键词(KeyWords)： 18Ni马氏体时效钢;晶粒长大模型;逆变奥氏体再结晶

Abstract:

Keywords:

基金项目(Foundation): 贵州省工业攻关项目(黔科合GY字(2011)3025)

作者(Author): 任永海,赵飞,严琰

DOI: 10.13289/j.issn.1009-6264.2013.09.020

参考文献(References)：

• [1]姜越,尹钟大,朱景川,等.马氏体时效不锈钢的发展现状[J].特殊钢,2003,24(3):1-5.JIANG Yue,YIN Zhong-da,ZHU Jing-chuan,el at.Development status of maraging stainless steel[J].Special Steel,2003,24(3):1-5.
• [2]罗皎,李淼泉,李宏.塑性变形时的微观组织模拟[J].材料导报,2008,22(3):102-106.LUO Jiao,LI Miao-quan,LI Hong.Microstructural simulation during plastic deformation[J].Journal of Materials Review,2008,22(3):102-106.
• [3]Liu Z Y,Xu Y B,Wang G D.Simxulation and Prediction of the Microstructural Evolution and Properties for Hot Rolled Steels[M].Shenyang:Northeastern University Press,2004.
• [4]陈建刚,张建福,卢凤双,等.18Ni马氏体时效钢强化方法概述[J].金属功能材料,2009,16(4):46-49.CHEN Jian-gang,ZHANG Jian-fu,LU Feng-shuang,el at.Outline of strengthening ways in 18Ni maraging steel[J].Journal of Metallic Functional Materials,2009,16(4):46-49.
• [5]何毅,刘凯,杨柯.固溶温度对超纯净18Ni(350)马氏体时效钢断裂韧性及微观组织的影响[J].金属学报,2003,39(4):381-386.HE Yi,LIU Kai,YANG Ke.Effect of solution temperature on fracture toughness and microstructure of ultrapurified 18Ni(350)maraging steel[J].Acta Metallurgica Sinica,2003,39(4):381-386.
• [6]刘福广.旋压态T-250无钻马氏体时效钢的组织与性能研究[D].西北工业大学,2007.LIU Fu-guang.The microstructure and mechanical properties research of flow forming T-250 Co-free maraging stee[D].Dissertation for Master's Degree,2007.
• [7]Kozo Nakazawa,Yoshikuni Kamabe,Seiichi Muneki.Grain refinement of austenite through reverse transformation from martensite in Fe-ISNi-Co-Mo-Ti alloy[J].Iron and steel,1981,2(10):1795-1804.
• [8]赵飞,秦路平,魏志坚,等.C-250马氏体时效钢逆变奥氏体再结晶温度的测定[J].热加工工艺,2011,24(12):38-44.ZHAO Fei,QIN Lu-ping,WEI Zhi-jian,el at.Determination of recrystallization temperature of reverted austenite of C-250 maraging steel[J].Hot Working Technology,2011,24(12):38-44.
• [9]Sellars C M,Whiteman J A.Recrystallization and grain growth in hot rolling[J].Metal Science,1979,13(3-4):187-194.
• [10]张志波,孙新军,刘清友,等.均热过程中低碳钢奥氏体晶粒长大规律研究[J].材料热处理学报,2008,29(5):89-92.ZHANG Zhi-bo,SUN Xin-jun,LIU Qing-you,el at.Study on austenite grain growth of a low carbon steel in heating process[J].Transactions of Materials and Heat Treatment,2008,29(5):89-92.
• [11]陈礼清,隋凤利,刘相华.Inconel 718合金方坯粗轧加热过程晶粒长大模型[J].金属学报,2009,45(10):1242-1248.CHEN Li-qing,SUI Feng-li,LIU Xiang-hua.Grain growth model of inconel 718 alloy forged slab in reheating process prior to rough rolling[J].Acta Metallurgica Sinica,2009,45(10):1242-1248.

文章评论(Comment)：