| Laser rapid forming of low cost hydride-dehydride titanium alloy powder |
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| 作者姓名： | 陈静 张凤英 林鑫 谭华 黄卫东 |
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| 作者单位： | State Key Laboratory of Solidification Processing, Northwestern Polytechnical University, Xi＇an 710072, China |
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| 基金项目： | Foundation item： Projects （50331010） supported by the National Natural Science Foundation of China; project （05XE0131） supported by the Talent Cultivating Program of Northwestern Polytechnical University |
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| 摘 要： | Low cost hydride-dehydride （HDH） Ti-6Al-4V （Ti-64） alloy powder was employed to investigate the metallurgical quality and mechanical properties oflaser formed samples. With appropriate control of the laser forming processing parameters and the loose density of HDH powder, two kinds of defect, i.e. porosity and ill-bonding, can be avoided. Rare earth Nd powder was added to HDH Ti-64 powder to purify laser formed alloy. The results show that with a few additive of Nd, the microstructure of laser formed alloy changes from Widmanstaitten morphology to a basket weave microstructure. Accordingly an appropriate addition of Nd is effective to improve both the strength and ductility of laser formed HDH Ti-64 alloy. The values of tensile test meet the wrought specification with the content of Nd ranging from 0. 1%-0.2%（mass fraction）.
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| 关 键 词： | 钛合金 激光成型 稀土元素 机械性能 微观结构 |
| 收稿时间： | 2006-07-28 |
| 修稿时间： | 2006-09-15 |
Laser rapid forming of low cost hydride-dehydride titanium alloy powder |
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| CHEN Jing, ZHANG Feng-ying, LIN Xin, TAN Hua, HUANG Wei-dong.Laser rapid forming of low cost hydride-dehydride titanium alloy powder[J].Transactions of Nonferrous Metals Society of China,2006,16(A03):2104-2108. |
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| Authors: | CHEN Jing ZHANG Feng-ying LIN Xin TAN Hua HUANG Wei-dong |
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| Abstract: | |
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| Keywords: | laser rapid forming hydride-dehydride titanium alloy powder rare earth Nd microstructure mechanical properties |
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