李晨辉,吴晓春,谢尘,汪宏斌

• 1:上海大学材料科学与工程学院

摘要(Abstract)：

对比研究了4种Cr8型模具钢的硬度、冲击韧性、抗弯强度及耐磨性能,借助JMatPro分别计算Cr8和Cr12型模具钢的碳化物类型与数量,讨论Cr8型模具钢合金化原理。结果表明:新型高强韧冷作模具钢SDC99成分设计合理,实物质量与进口钢相当。Cr8型模具钢通过成分调整,降低M7C3型莱氏体碳化物含量,大幅度提高冲击韧性;同时提高Mo、V等强碳化物形成元素含量,以增加二次碳化物,保证碳化物总量,提高耐磨性;加入Ni、Si等非碳化物形成元素细化晶粒,强化基体,增强韧性。

关键词(KeyWords)： Cr8型模具钢;力学性能;JMatPro模拟;合金设计

Abstract:

Keywords:

基金项目(Foundation): 国家科技支撑计划资助项目(2007BAE510B04);; 上海市重点学科建设项目资助(S30107)

作者(Author): 李晨辉,吴晓春,谢尘,汪宏斌

DOI: 10.13289/j.issn.1009-6264.2013.04.017

参考文献(References)：

• [1]陈再枝,蓝德年.模具钢手册[M].北京:冶金工业出版社,2002.
• [2]迟宏宵,马党参,王昌,等.Cr8Mo2SiV钢二次硬化机理的研究[J].金属学报,2010,46(10):1181-1185.CHI Hong-xiao,MA Dang-shen,WANG Chang,et al.Study on secondary hardening mechanism of Cr8Mo2SiV steel[J].Acta Metallurgica Sinica,2010,46(10):1181-1185.
• [3]陆兴.热处理工程基础[M].北京:机械工业出版社,2007.
• [4]陈再良,陈蕴博,佟晓辉,等.典型冷作模具钢性能与失效关系的探讨[J].金属热处理,2006,31(2):87-93.CHEN Zai-liang,CHEN Yun-bo,TONG Xiao-hui,et al.Mechanical properties and failure types for cold working die steels[J].Heat Treatment ofMetals,2006,31(2):87-93.
• [5]马党参,迟宏宵,雍岐龙,等.铝对Cr8WMo2V2SiNb冷作模具钢组织及力学性能的影响[J].钢铁,2010,45(6):79-83.MA Dang-shen,CHI Hong-xiao,YONG Qi-long,et al.Effect of aluminum on microstructure and mechanical properties of Cr8WMo2V2SiNb steel[J].Iron and Steel,2010,45(6):79-83.
• [6]孙家枢.金属的磨损[M].北京:冶金工业出版社,1992.
• [7]杜永泽,陈再枝.钒含量对D2模具钢耐磨性的影响[J].钢铁研究学报,1997,9(S):62-67.DU Yong-ze,CHEN Zai-zhi.Effect of the vanadium content on wearability of D2 die steel[J].Journal of Iron and Steel Research,1997,9(S):62-67.
• [8]李绍宏.高强韧冷作模具钢组织设计及组织控制研究[D].上海大学,2011.LI Shao-hong.Research of microstructure design and control on high strength high toughness cold work die steel[D].Shanghai University,2011.
• [9]Kubota K,Takuya Ohba,Shigekazu Morito.Frictional properties of new developed cold work tool steel for high tensile strength steel forming die[J].Wear,2011,271:2884-2889.
• [10]黄光晖,曹念荪,孙培祯,等.Ni和Si在高强韧低合金冷作模具钢(GD钢)中的作用[J].材料研究学报,1994,8(2):134-141.HUANG Guang-hui,CAO Nian-sun,SUN Pei-zhen,et al.Effects of Ni and Si in a high-strength high-toughness low alloy cold-working die steel(GDsteel)[J].Chinese Journal of Materials Research,1994,8(2):134-141.
• [11]Geng H M,Wu X C,Min Y A,et al.Effect of copperadditionon mechanical properties of 4Cr16Mo[J].Acta Metallurgica Sinica,2008,21(1):43-49.
• [12]耿鸿明,吴晓春,闵永安,等.铜、硫对不锈钢4Cr13加工性能的影响[J].钢铁,2008,43(3):68-71.GENG Hong-ming,WU Xiao-chun,MIN Yong-an,et al.Effects of Copper and sulfur on mechanical properties of stainless steel 4Cr13[J].Iron andSteel,2008,43(3):68-71.
• [13]Kim Soon-Tae,Park Yong-Soo.Effects of copper and sulfur additions on machinability behavior of high performance austenitic stainless steel[J].MetMater Int,2009,15(2):221-230.

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