| 机械合金化和放电等离子烧结技术制备Ti基大块非晶合金 |
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| 引用本文： | 王葛,李强,宋学平,范亮,胡文涛,肖福仁,马明榛,张久兴,刘日平.机械合金化和放电等离子烧结技术制备Ti基大块非晶合金[J].稀有金属材料与工程,2008(Z4). |
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| 作者姓名： | 王葛 李强 宋学平 范亮 胡文涛 肖福仁 马明榛 张久兴 刘日平 |
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| 作者单位： | 燕山大学;北京工业大学;燕山大学亚稳材料国家重点实验室; |
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| 基金项目： | 中国博士后基金委员会“第三十九批中国博士后科学基金一等资助金”资助(20060390218); 河北教育厅科学研究项目(ZH2006010) |
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| 摘 要： | 将0.075mm的Ti,Cu,Ni,Sn4种金属粉按合金成分为Ti50Cu23Ni20Sn7进行配比,并在行星式球磨机中进行机械合金化(MA)球磨。试验中的球磨机转速为300r/m,球料比为10:1。XRD和DSC分析结果表明,经过30h球磨之后,金属粉末已经全部合金化,并且为非晶态结构。继续进行球磨只能减小粉末颗粒尺寸,却会引入更多的杂质,所以30h是制备Ti50Cu23Ni20Sn7非晶合金粉末最为合适的时间。SEM下观察发现,经机械合金化所获得的非晶粉为层状团聚结构。将所制备的非晶合金粉装入碳化钨模具中,并在放电等离子烧结(SPS)设备中进行快速烧结。其烧结的温度分别为480、490、500和510℃,烧结压力为500MPa,保温时间为1min。从XRD和DSC分析结果可以看出,烧结后的合金基体为非晶结构,并伴有少量晶化相。烧结件放在光学显微镜下观察可以看到少许缩孔和疏松等烧结缺陷。将温度为490℃下烧结的试件破碎,并将断口在SEM下观察可以发现,试件断裂方式为层状脆性断裂。试验结果表明采用机械合金化和放电等离子烧结技术可以成功制备出Ti基大块金属玻璃。
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| 关 键 词： | 机械合金化 放电等离子烧结 Ti基合金 大块非晶合金 粉末冶金 |
Ti-Based Bulk Metallic Glasses Produced by Mechanical Alloying and Spark-Plasma Sintering |
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| Wang Ge ,Li Qiang ,,Song Xueping ,Fan Liang ,Hu Wentao ,Xiao Furen ,Ma Mingzhen ,Zhang Jiuxing ,Liu Riping.Ti-Based Bulk Metallic Glasses Produced by Mechanical Alloying and Spark-Plasma Sintering[J].Rare Metal Materials and Engineering,2008(Z4). |
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| Authors: | Wang Ge Li Qiang Song Xueping Fan Liang Hu Wentao Xiao Furen Ma Mingzhen Zhang Jiuxing Liu Riping |
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| Affiliation: | Wang Ge 1,Li Qiang 1,2,3,Song Xueping 1,Fan Liang 2,Hu Wentao 3,Xiao Furen 3,Ma Mingzhen 3,Zhang Jiuxing 2,Liu Riping 3 (1. Yanshan University,Qinhuangdao 066004,China) (2. Beijing University of Technology,Beijing 100022,China) (3. Key Laboratory of Metastable Materials Science , Technology,Yanshan University,China) |
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| Abstract: | Powder metallurgy technologies were developed to prepare Ti50Cu23Ni20Sn7 Bulk Metallic Glasses (BMGs). Firstly, amorphous powder was prepared by mechanical alloying (MA) method successfully. The as-milled amorphous powder was then consolidated by spark-plasma sintering (SPS) method into four specimens with the shape of cylindrical stick, with a diameter and height of about 20 mm and 10 mm respectively. The SPS experiments were conducted under a pressure of 500 MPa at the heating rate of 40 K/min, holding fo... |
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| Keywords: | bulk metallic glasses Ti-based alloys powder metallurgy mechanical alloying spark-plasma sintering |
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