锰含量对3Cr4MoSiV热锻模具钢抗回火软化能力的影响
Effect of Mn Content on Tempering Softening Resistance of Hot Forging Die Steel 3Cr4MoSiV
摘 要
对锰质量分数分别为1.20%, 2.00%和4.00%的3Cr4MoSiV热锻模具钢在550 ℃和650 ℃进行回火处理, 然后利用高分辨透射电镜(TEM)、场发射扫描电镜(SEM)、硬度仪等研究了锰含量对其抗回火软化能力的影响。结果表明: 当锰质量分数为1.20%时, 试验钢的抗回火软化能力最佳; 锰含量增加有利于该钢在550 ℃短时间回火过程抗回火软化能力的提高, 但却使550 ℃长时间回火过程及650 ℃回火过程的抗回火软化能力降低; 锰质量分数大于1.20%的试验钢在650 ℃回火过程中, 抗回火软化能力大大降低, 这是因为较多锰元素的加入促进了碳化物粗化。
抗回火软化能力
锰元素
碳化物
hot forging die steel
tempering softening resistance
Mn element
carbide
Abstract
Tempering treatments at 550 ℃ and 650 ℃ were carried out on hot forging die steel 3Cr4MoSiV samples containing 1.20wt%,2.00wt% and 4.00wt% Mn, and the effect of Mn content on tempering softening resistance of the steel was investigated by means of transmission electron microscopy, scanning electron microscopy, hardness testing and so on. The results show that tempering softening resistance was the most excellent when Mn content was 1.2wt%. Increasing Mn content was good for improving tempering softening resistance of the steel after tempering at 550 ℃ for short time, but decreasing that after tempering at 550 ℃ for a long time and at 650 ℃. After tempering at 650 ℃, tempering softening resistance of the steel containing above 1.20wt% Mn greatly decreased mainly, this was due to the more content of Mn promoting carbide coarsening.
中图分类号 TG142.1 DOI 10.11973/jxgccl201603017
所属栏目 材料性能及其应用
基金项目 国家自然科学基金资助项目(51171104)
收稿日期 2014/11/21
修改稿日期 2015/10/11
网络出版日期
作者单位点击查看
备注左鹏鹏(1988-), 男, 江苏如东人, 博士研究生。
引用该论文: ZUO Peng-peng,ZHU Chun-yan,MIN Na,WU Xiao-chun. Effect of Mn Content on Tempering Softening Resistance of Hot Forging Die Steel 3Cr4MoSiV[J]. Materials for mechancial engineering, 2016, 40(3): 70～73
左鹏鹏,朱春燕,闵娜,吴晓春. 锰含量对3Cr4MoSiV热锻模具钢抗回火软化能力的影响[J]. 机械工程材料, 2016, 40(3): 70～73
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【3】梁洪达,崔崑,何向山,等.Mn对热作模具钢4Cr3Mo2NiVNb热疲劳性能的影响［J］. 金属热处理学报,1994,15(4): 22-25.
【4】谢长生, 孙培祯, 乔学亮, 等. 含Mn-Ni高热稳定性热作模具钢的性能［J］. 热加工工艺,1992(3):19-21.
【5】BJRKLUND S, DONAGHEY L F, HILLERT M. The effect of alloying elements on the rate of ostwald ripening of cementite in steel［J］. Acta Metallurgica,1972,20(7):867-874.
【6】BABU S S, HONO T,SAKURAI. APFIM studies on martensite tempering of Fe-C-Si-Mn low alloy steel［J］. Applied Surface Science,1993,67(1/4): 321-327.
【7】石楠楠, 吴晓春, 闵娜. 4Cr2Mo2W2V钢中碳化物的演变对热稳定性的影响［J］. 材料热处理学报, 2011, 32 (11): 68-72.
【8】石楠楠, 吴晓春, 陈英伟. 4Cr2Mo2W2V热作模具钢的高温抗压性能［J］. 机械工程材料, 2012, 36 (1): 81-84.
【9】计天予, 吴晓春. 新型热作模具钢SDH3-Mod的热稳机理研究［J］. 材料科学与工艺, 2014, 22 (6): 29-35.
【10】ZHOU Q C, WU X C, SHI N N, et al. Microstructure evolution and kinetic analysis of DM hot-work die steels during tempering［J］. Materials Science and Engineering: A, 2011, 528: 5696-5700.
【11】ARMAS A F, PETERSEN C, SCHMITT R, et al. Mechanical and microstructural behaviour of isothermally and thermally fatigued ferritic/martensitic steels［J］. Journal of Nuclear Materials,2002,307/311:509-513.
【12】LEHTINEN B, ROBERTS W. Microstructural changes during tempering of hot-work tool steels-a comparison of AISI H13 and UHB QRO80［C］//Tools for Die Casting Symposium. Stockholm: Swedish Institute for Metals Research, 1983.
【13】宋雯雯, 闵永安, 吴晓春. 热作模具钢SDH8与H13的强韧性对比研究［J］. 金属热处理, 2008,33(9):59-61.
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【15】MOOR E D, MATLOCK D K, SPEER J G, et al. Austenite stabilization through manganese enrichment［J］. Scripta Materialia, 2011, 64 (2): 185-188.
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