微量元素对18Ni马氏体时效钢显微组织和力学性能的影响
Influence of Trace Elements on Microstructure and Mechanical Properties of 18Ni Maraging Steel
摘 要
为了进一步提高18Ni马氏体时效钢的力学性能, 在钢中分别加入铌、钒或硼等微量元素,研究了不同微量元素对其显微组织和力学性能的影响。结果表明: 添加微量(0.1%)铌元素的效果好于添加钒(0.1%)和硼(0.01%)的, 能够更加有效地细化晶粒, 使其固溶态的晶粒度达到10.2级; 经时效处理以后, 钢中金属间化合物能够更加弥散地均匀分布, 使其强度与M300钢的基本相同, 但伸长率和断面收缩率略微降低了2.1%。
微量元素
热处理
力学性能
maraging steel
trace element
heating treatment
mechanical property
Abstract
In order to further enhance the mechanical properties of 18Ni maraging steel, adding trace elements such as niobium, vanadium or boron into the steel, then it was investigated the influences of different trace elements on microstructure and mechanical properties. The results show that the steel adding 0.1wt% niobium had finer grains than that adding 0.1wt% vanadium or 0.01wt% boron, whose grain size in solid solution state reached to 10.2 grade. After aging, the intermetallic compounds distributed more uniformly and dispersively, so that the tensile strength of steel was as much as that of M300 steel, while its elongation and reduction of area decreased by 2.1%.
中图分类号 TG142.24
所属栏目
基金项目 江苏省研究生创新计划项目(JKD-061003)
收稿日期 2010/1/9
修改稿日期 2010/8/17
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备注徐玉松(1960-), 男, 安徽芜湖人, 副教授。
引用该论文: XU Yu-song,LI Guo-yi,ZHANG Wei,ZHENG Li-fen. Influence of Trace Elements on Microstructure and Mechanical Properties of 18Ni Maraging Steel[J]. Materials for mechancial engineering, 2011, 35(3): 32～35
徐玉松,李国一,张伟,郑莉芬. 微量元素对18Ni马氏体时效钢显微组织和力学性能的影响[J]. 机械工程材料, 2011, 35(3): 32～35
被引情况:
【1】杨帅,彭云,张晓牧,彭展南,田志凌, "C300马氏体时效钢等离子弧焊接接头的组织与硬度",机械工程材料 38, 1-5(2014)
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参考文献
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【2】杨德庄.金属材料学[M].哈尔滨:哈尔滨工业大学出版社,1979:226-228.
【3】LEE D G, JANG K C, KUK J M,et al. The influence of niobium and aging treatment in the 18% Ni maraging steel[J].Journal of Materials Processing Technology,2005,162:342-349.
【4】YI He, KE Yang, WEI Sha,et al. Age hardening and mechanical properties of a 2 400 MPa grade cobalt-free maraging steel[J].Metallurgical and Materials Transactions,2006,37:1107-1116.
【5】HOSSEIN NEDJAD S, MOVAGHAR GARABAGH M R, AHMADABADI M N,et al. Effect of further alloying on the microstructure and mechanical properties of an Fe-10Ni-5Mn maraging steel[J].Materials Science and Engineering,2008,473:249-253.
【6】KAPOOR R, BATRA I S. On the α′ to γ transformation in maraging (grade 350), PH 13-8 Mo and 17-4 PH steels[J].Materials Science and Engineering,2004,371:324-334.
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