| Sn替代Si和B对Ti50Ni22Cu18Al4Si4B2合金机械研磨非晶化的促进作用 |
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| 引用本文： | 张来昌,沈智奇,徐坚.Sn替代Si和B对Ti50Ni22Cu18Al4Si4B2合金机械研磨非晶化的促进作用[J].金属学报,2004,40(9):981-986. |
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| 作者姓名： | 张来昌 沈智奇 徐坚 |
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| 作者单位： | 中国科学院金属研究所沈阳材料科学国家(联合)实验室,沈阳,110016 |
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| 基金项目： | 国家自然科学基金50371084和50323009资助项目 |
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| 摘 要： | 采用Xn替代Ti50Ni22Cu18Al4Si4B2合金中的Si和B1形成Ti50Ni22Cu18Al4Snx(Si0．67B0．33)6-x(x=0，3，6)系列合金．所有的预制合金碎屑经过机械研磨均发生非晶化转变．随着合金中Sn含量的增加，球磨产物中转变未尽的晶体相α-Ti含量减少．由Sn完全替代Si和B的Ti50Ni22Cu18Al4Sn6合金，机械研磨可形成与熔体急冷几乎相同的单一均匀非晶相，过冷液态温度区间可达到66K．
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| 关 键 词： | 钛合金 机械合金化 非晶态合金 过冷液体 |
| 文章编号： | 0412-1961(2004)09-0981-06 |
| 收稿时间： | 2004-04-05 |
The Role of Sn Substitution for Si And B to Enhance the Amorphization of Mechanically-Milled Ti50Ni22Cu18Al4Si4B2 Alloy |
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| ZHANG Laichang,SHEN Zhiqi,XU Jian.The Role of Sn Substitution for Si And B to Enhance the Amorphization of Mechanically-Milled Ti50Ni22Cu18Al4Si4B2 Alloy[J].Acta Metallurgica Sinica,2004,40(9):981-986. |
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| Authors: | ZHANG Laichang SHEN Zhiqi XU Jian |
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| Affiliation: | Shenyang National Laboratory for Materials Science, Institute of Metal Research, The Chinese Academy of Sciences, Shenyang 110016 |
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| Abstract: | Elements Si and B in the Ti50Ni22Cu18Al4Si4B2 alloy are substituted with Sn to form the Ti50Ni22Cu18Al4Snx(Si0.67B0.33)6-x(x=0, 3, 6) series alloys. In all cases, mechanical milling of the prealloyed fragments results in the amorphization of the alloys. With increasing the Sn content in the alloys, the fraction of residual a-Ti crystallites in the final milled product was reduced. For the Ti50Ni22Cu18Al4Sn6 alloy, in which the Si and B are completely replaced with Sn, the nearly complete amorphization is achievable. A single amorphous phase, similar to the melt-quenched glass, formed in the milled alloy. Such a, ball-milled glassy alloy exhibits a large supercooled liquid region about 66 K. |
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| Keywords: | titanium alloy mechanical alloying amorphous alloy supercooled liquid |
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