| ZK60-xY合金的微观组织和力学性能研究 |
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| 引用本文： | 吴安如,夏长清,王银娜,戴晓元.ZK60-xY合金的微观组织和力学性能研究[J].矿冶工程,2006,26(1):77-80. |
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| 作者姓名： | 吴安如 夏长清 王银娜 戴晓元 |
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| 作者单位： | 1. 中南大学 材料科学与工程学院, 湖南 长沙 410083;
2. 湖南工程学院 机械电子工程系, 湖南 湘潭 411101 |
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| 摘 要： | 以ZK60为基础合金, 研究了不同钇添加量对其组织性能的影响。显微组织分析结果表明: 钇有明显细化晶粒的作用, 合金在热挤压过程中发生了动态再结晶。力学测试结果表明, 经过热挤压和T5(人工时效)处理后, Y含量为0.9%的合金具有最优的综合力学性能, 其抗拉强度和延伸率分别为: σb=355.94 MPa, δ=15.86%。对该合金分别进行T6(固溶+时效)和T5 2种热处理后进行力学性能测试, 结果表明:T5处理制度更适用于该合金。
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| 关 键 词： | ZK60合金 钇 动态再结晶 显微组织 力学性能 |
| 文章编号： | 0253-6099(2006)01-0077-04 |
| 收稿时间： | 2005-09-20 |
| 修稿时间： | 2005年9月20日 |
A Research of Microstructures and Mechanical Properties of ZK60-xY Alloys |
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| WU An-ru,XIA Chang-qing,WANG Yin-na,DAI Xiao-yuan.A Research of Microstructures and Mechanical Properties of ZK60-xY Alloys[J].Mining and Metallurgical Engineering,2006,26(1):77-80. |
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| Authors: | WU An-ru XIA Chang-qing WANG Yin-na DAI Xiao-yuan |
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| Affiliation: | 1. School of Materials Science and Engineering, Central South University, Changsha 410083, Hunan, China;
2. Dept of Elect and Mech Eng, Hunan Institute of Engineering, Xiangtan 411101, Hunan, China |
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| Abstract: | Taking ZK60 alloy as a master alloy, a research was made on the influence of Y content on the microstructures and mechanical properties of the investigated alloys. The results of microstructure analysis show that Y has an obvious effect of refining crystal grains. During the course of extrusion, dynamic re-crystallization accompanied by phase transformation occurs in the alloys. After extrusion and aging treatment, the alloy with 0.9%Y gets the best comprehensive mechanical properties with a tensile strength of 355.94 MPa and an elongation of 15.86%. The alloy was treated by two ways of T6 (solution treatment at 430 ℃ for 5 hrs + aging at 150 ℃ for 22 hrs) and T5 (aging at 150 ℃ for 24 hrs) respectively. The mechanical test results show that T5 treatment is more suitable for the alloy. |
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| Keywords: | ZK60 alloy yttrium dynamic re-crystallization microstructure mechanical property |
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