颜国君,张欣昱,美小煜,王锦涛,王文城,薛琦,刘保建,蒋百铃

• 1:西安理工大学材料科学与工程学院
• 2:陆军装备部装备项目管理中心

摘要(Abstract)：

采用光学显微镜(OM)、扫描电镜(SEM)、透射电镜(TEM)和硬度计等对QTNi4MoV球墨铸铁在淬火和回火过程中的组织及硬度变化规律进行了研究。结果表明：经1323 K保温4 h的石墨化退火处理后，QTNi4MoV球墨铸铁的组织由石墨球+残留奥氏体+针状贝氏体组成，硬度约为40 HRC;再经1223 K保温1 h油淬后，QTNi4MoV球墨铸铁的组织由石墨球、马氏体和残留奥氏体组成，硬度为48.5 HRC;淬火后QTNi4MoV球墨铸铁的组织具有良好的回火抗力，回火温度达到773 K时，其淬火马氏体才开始分解；经773 K保温3 h的一次和二次回火后，QTNi4MoV球墨铸铁的组织为石墨球、回火马氏体和少量残留奥氏体，硬度值分别为47.5和46 HRC,抗拉强度高于900 MPa,满足铝合金压铸模具服役时对其制造材料在力学性能方面的要求。

关键词(KeyWords)： QTNi4MoV球墨铸铁;淬火;回火;显微组织;硬度

Abstract:

Keywords:

基金项目(Foundation):

作者(Author): 颜国君,张欣昱,美小煜,王锦涛,王文城,薛琦,刘保建,蒋百铃

DOI: 10.13289/j.issn.1009-6264.2023-0348

参考文献(References)：

• [1] 廖伟平.铝合金压铸模具失效成因与改善措施[J].新型工业化，2022,12(8):72-75.LIAO Wei-ping.The failures and their preventions for the aluminum alloy die casting die[J].The Journal of New Industrialization,2022,12(8):72-75.
• [2] 曾欣.铝合金压铸用新型热作模具钢的制备及性能研究[J].铸造，2017,66(3):234-237.ZENG Xin.The preparation and properties study of new type hot-work die steel used foe aluminum alloy casting[J].Foundry,2017,66(3):234-237.
• [3] 赵艳红，孟昭昕，黄勇，等.铝合金外壳半固态压铸数值模拟与工艺优化[J].铸造，2016,65(4):351-354.ZHAO Yan-hong,MENG Zhao-xin,HUANG Yong,et al.Numerical simulation and optimization of the Al alloy shell semi-solid die-casting process[J].Foundry,2016,65(4):351-354.
• [4] 周友松，张永亮，熊英.铝合金油底壳压铸模失效分析及提高使用寿命途径[J].金属加工：热加工，2016(21):39-42.ZHOU You-song,ZHANG Yong-liang,XIONG Ying.Failure analysis and ways to improve service life of aluminum alloy oil pan die casting die[J].MW Metal Forming,2016(21):39-42.
• [5] 郭联金，金林奎，孟鑫沛，等.NOS425 钢铝合金压铸模早期开裂失效分析[J].锻压技术，2019,44(8):129-136.GUO Lian-jin,JIN Lin-kui,MENG Xin-pei,et al.Failure analysis on early cracking of die-casting mold for NOS425 steel-aluminum alloy[J].Forging & Stamping Technology,2019,44(8):129-136.
• [6] 罗洪峰，吴晶，陈维平.金属材料在铝液中腐蚀行为的研究[J].材料科学与工艺，2014,22(2):92-96.LUO Hong-feng,WU Jing,CHEN Wei-ping.Corrosion behavior of metals in molten aluminum[J].Materials Science & Technology,2014,22(2):92-96.
• [7] 王建忠.铝压铸模的浸蚀磨损机理[J].国外金属热处理，2000,21(4):51-56.WANG Jian-zhong.Erosion-wear mechanism of aluminum die casting die[J].Heat Treatment Technology and Equipment,2000,21(4):51-56.
• [8] Shahverdi H R,Ghomashchi M R,Shabestari S,et al.Microstructural analysis of interfacial reaction between molten aluminium and solid iron[J].Journal of Materials Processing Technology,2002,124(3):345-352.
• [9] 赵建伟.铝合金压铸模具龟裂失效分析[J].中国金属通报，2020(1):96,98.ZHAO Jian-wei.The analysis on the cracking-failure of the aluminum alloy die casting die[J].China Metal Bulletin,2020(1):96,98.
• [10] 罗洪峰，吴晶，陈维平.耐铝液腐蚀材料的研究与进展[J].材料导报，2010,24(13):75-80.LUO Hong-feng,WU Jing,CHEN Wei-ping.Research and development of corrosion resistant materials in molten aluminum[J].Materials Review,2010,24(13):75-80.
• [11] 彭淑君，杨永泉.提高铝合金压铸模寿命的途径[J].热处理，2013,28(2):49-52.PENG Shu-jun,YANG Yong-quan.Ways to increase service life of die-casting die for aluminum alloy[J].Heat Treatment,2013,28(2):49-52.
• [12] 耿鑫明.压铸模生产现状及发展趋势[J].金属加工(热加工),2008(3):26-29.GENG Xin-ming.Production and development of die casting die[J].MW Metal Forming,2008(3):26-29.
• [13] 徐云，王国良.合金元素对铝合金压铸模寿命的影响分析[J].热加工工艺，2013,42(11):72-74.XU Yun,WANG Guo-liang.Effects of alloying elements on casting die life of aluminum alloy[J].Hot Working Technology,2013,42(11):72-74.
• [14] 罗洪峰.铸铁铝液腐蚀行为的研究进展[J].轻工科技，2017,2:37-38.LUO Hong-feng.Research progress on corrosion behavior of cast iron by liquid aluminum[J].Light Industry Science and Technology,2017,2:37-38.
• [15] 曾辉，王学华.陈信.复合石墨组织铸铁抗铝液侵蚀的机理及应用[J].铸造，2003,52(2):89-91.ZENG Hui,WANG Xue-hua,CHEN Xin.Principle and application of complex graphite structure preventing molten aluminum from eroding cast iron[J].Foundry,2003,52(2):89-91.
• [16] 姜文标，刘友鹏，舒光冀.铝液对右墨润湿过程的研究[J].金属学报，1988,24(2):146-149.JIANG Wen-biao,LIU You-peng,SHU Guang-ji.Wetting of graphite by liquid aluminum[J].Acta Metallurgica Sinica,1988,24(2):146-149.
• [17] 陈维平，黄松涛，龚建森.一种抗氧化耐高温铝液腐蚀的新型低合金铸铁[J].广西大学学报目然科学版，1996,21(2):143-147.CHEN Wei-ping,HUANG Song-tao,GONG Jian-sen.A new type of low alloy cast iron for the oxidation and corrosion resisting to the high temperature aluminum liquid[J].Journal of Guangxi University (Natural Science Edition),1996,21(2):143-147.
• [18] 王金洪.硅、 铬、 铜对铝液测温用铸铁保护管耐铝液侵蚀性能的影响[J].铸造，2001,50(7):384-387.WANG Jin-hong.Effect of Si,Cr and Cu on the corrosion resistance to aluminum melt of cast iron protector tube used for measuring temperature of aluminum melt[J].Foundry,2001,50(7):384-387.
• [19] 高占勇，张金龙，武文霞，等.石墨形态对铸铁在铝液中耐腐蚀性的影响[J].铸造，2009,58(9):937-939.GAO Zhan-yong,ZHANG Jin-long,WU Wen-xia,et al.Effect of graphite morphology on erosion resistance of cast iron in molten aluminum[J].Foundry,2009,58(9):937-939.
• [20] 张雅静，李帅平，时贵安，等.碳镍含量对耐铝液腐蚀低合金灰铸铁组织和性能的影响[J].铸造，2019,68(1):12-16.ZHANG Ya-jing,LI Shuai-ping,SHI Gui-an,et al.Effect of carbon and nickel content on microstructure and properties of low alloy gray cast iron[J].Foundry,2019,68(1):12-16.
• [21] 李静，赵靖宇，杨勇.镍对球墨铸铁组织及性能的影响[J].铸造，2016,65(9):903-906.LI Jing,ZHAO Jing-yu,YANG Yong.Effects of nickel on structure and mechanical properties of ductile iron[J].Foundary,2016,65(9):903-906.
• [22] 肖丽丽，任凤章，李锋军，等.灰铸铁不同合金化同等强度下的加工性能对比研究[J].铸造技术，2012,33(5):512-515.XIAO Li-li,REN Feng-zhang,LI Feng-jun,et al.Comparative on the machinability of two alloying gray cast irons with equal tensile strength[J].Foundry Technology,2012,33(5):512-515.
• [23] 李蒙，谢顺利，张秀领，等.Ni合金化球墨铸铁组织和性能研究[J].材料科学与工艺，2019,27(3):53-59.LI Meng,XIE Shun-li,ZHANG Xiu-ling,et al.Study on microstructure and properties of Ni alloyed ductile cast iron[J].Materials Science and Technology,2019,27(3):53-59.
• [24] 于思荣，朱先勇，高乾，等.合金元素对球墨铸铁抗热疲劳性能的影响[J].铸造技术，2010,31(6):691-694.YU Si-rong,ZHU Xian-yong,GAO Qian,et al.Effect of alloying elements on the thermal fatigue properties of ductile iron[J].Foundry Technology,2010,31(6):691-694.
• [25] 赵强，张元华，王玲玲，等.耐磨高韧性球墨铸铁的研制及应用[J].科技创新导报，2016,13(28):57-58.ZHAO Qiang,ZHANG Yuan-hua,WANG Ling-ling,et al.Development and application of wear-resistant ductile iron[J].Science and Technology Innovation Herald,2016,13(28):57-58.
• [26] 秦茶，张琰，赵清华.激光强化合金球墨铸铁轧辊的微观组织及性能[J].金属热处理，2011,36(6):21-24.QIN Cha,ZHANG Yan,ZHAO Qing-hua.Microstructure and properties of alloy nodular cast iron roller treated by laser gardening[J].Heat Treatment of Metals,2011,36(6):21-24.
• [27] 齐增生，梁谨，安会芬.合金球墨铸铁初轧辊热处理工艺[J].金属热处理，2007,32(6):99-101.QI Zeng-sheng,LIANG Jin,AN Hui-fen.Heat treatment process of alloy nodular cast iron rollers[J].Heat Treatment of Metals,2007,32(6):99-101.
• [28] 王笑天.金属材料学[M].北京：机械工业出版社，1987.

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