微量钛、硼对AM50镁合金组织和性能的影响
Effect of Addition Ti and B on Microstructure and Mechanical Properties of AM50 Magtesion Alloy
摘 要
对在AM50镁合金中添加不同微量钛、硼元素后的微观组织和力学性能的变化规律进行了研究.结果表明：微量钛、硼的加入能够细化AM50合金的晶粒,改善第二相的形貌,使第二相变得细小,分布更加均匀;微量钛、硼在含量分别为0.002%和0.001 0%附近时合金室温力学性能明显提高;过多添加钛、硼并不能明显提高AM50合金的力学性能.
显微组织
力学性能
AM50 magnesium alloy
microstructure
mechanical properties
Abstract
The effects of Ti and B on the microstructure and mechanical properties of AM50 magnesium alloy had been investigated.The results indicate that the addition of Ti and B can refine the microstructure of AM50 alloy.The experimental results also show that proper additions of Ti and B can increase its mechanical properties at ambient temperature significantly,while the ductility of the alloy does not decrease.When the modifications of Ti and B exceed proper additions,the AM50 mechanical properties do not increase.
中图分类号 TG146.22
所属栏目
基金项目 江苏大学高级人才资助项目(06JDG014)
收稿日期 2005/11/7
修改稿日期 2005/12/24
网络出版日期
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备注李冬升(1975-),男,江苏徐州人,助教,硕士.
引用该论文: LI Dong-sheng,CHENG Xiao-nong,LI Dan. Effect of Addition Ti and B on Microstructure and Mechanical Properties of AM50 Magtesion Alloy[J]. Materials for mechancial engineering, 2006, 30(11): 45～47
李冬升,程晓农,李丹. 微量钛、硼对AM50镁合金组织和性能的影响[J]. 机械工程材料, 2006, 30(11): 45～47
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参考文献
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【2】陈振华.镁合金[M].北京:化学工业出版社,2004.
【3】郭学锋,魏建锋,张忠明.镁合金与超高强度镁合金[J].铸造技术,2002,(3):133-136.
【4】Avedusian M M,Baker H.Mangnesium and magnesium alloys,ASM specialty handbook[M].Materials Park,OH:ASM International ,1999.
【5】Wang R M,Eliezer A,Gutman E.Microstructure and dislocations in the stressed AZ91 magnesium alloys[J].Mater Sci Eng,2002,A344:279-287.
【6】李喜珍,边秀芳,李秀军,等.Al-Ti-B合金中TiB2和AlB2的从头算研究[J].金属学报,2001,(3):235-238.
【7】Hiroaki Okamoto.Phase diagrams of dilute binary alloys[M].OH:ASM International,2002.
【8】ASM Handbook Committee.Alloy phase diagrams[M].OH:ASM International,1992.
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