| 放电等离子烧结-非晶晶化法合成Ti7oNb7.8Cu8.4Ni7.2Al6.6复合材料 |
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| 引用本文： | 陈友,梁甲宏,杨超,李小强,肖志瑜,李元元. 放电等离子烧结-非晶晶化法合成Ti7oNb7.8Cu8.4Ni7.2Al6.6复合材料[J]. 中国有色金属学报, 2011, 21(6) |
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| 作者姓名： | 陈友 梁甲宏 杨超 李小强 肖志瑜 李元元 |
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| 作者单位： | 华南理工大学 国家金属材料近净成形工程技术研究中心,广州,510640 |
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| 基金项目： | 国家重点基础研究发展计划前期研究专项基金资助项目，国家自然科学基金资助项目 |
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| 摘 要： | 采用机械合金化制备不含和含2%(体积分数)B4C的钛基非晶合金粉末,随后采用放电等离子烧结-非晶晶化法合成不含／含(TiB+TiC)的Ti7oNb7.8Cu8.4Ni7.2Al6.6超细晶／细晶钛基复合材料；运用X射线衍射分析(XRD)、差示扫描量热分析(DSC)、扫描电子显微镜(SEM)和万能材料试验机等对制备的钛基非晶粉末和超细晶／细晶钛基复合材料进行表征.结果表明高能球磨80h的钛基粉末中主要为非晶相,B4C颗粒的加入对钛基粉末的玻璃转变温度、晶化温度和晶化焓有显著的影响.另外,不含／含(TiB+TiC)的复合材料的显微硬度分别为5.47和5.33GPa;以50K/min升温到1223K并保温10min获得的Ti70Nb7.8Cu8.4Ni7.2Al6.6块体试样的断裂强度和断裂应变分别为2098MPa和11.5%.
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| 关 键 词： | 钛基复合材料 放电等离子烧结 机械合金化 晶化 |
Fabrication of crystallized Ti70Nb7.8Cu8.4Ni7.2Al6.6 composites by spark plasma sintering or crystallization of amorphous phase |
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| CHEN You,LIANG Jia-hong,YANG Chao,LI Xiao-qiang,XIAO Zhi-yu,LI Yuan-yuan. Fabrication of crystallized Ti70Nb7.8Cu8.4Ni7.2Al6.6 composites by spark plasma sintering or crystallization of amorphous phase[J]. The Chinese Journal of Nonferrous Metals, 2011, 21(6) |
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| Authors: | CHEN You LIANG Jia-hong YANG Chao LI Xiao-qiang XIAO Zhi-yu LI Yuan-yuan |
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| Affiliation: | CHEN You,LIANG Jia-hong,YANG Chao,LI Xiao-qiang,XIAO Zhi-yu,LI Yuan-yuan (National Engineering Research Center of Near-net-shape Forming for Metallic Materials,South China University of Technology,Guangzhou 510640,China) |
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| Abstract: | The Ti-based amorphous alloy powders without or with 2%(volume fraction,%) B4C were synthesized by mechanical alloying,and subsequently the powders were consolidated into crystallized Ti70Nb7.8Cu8.4Ni7.2Al6.6 ultrafine/fine-grained composites without or with(TiB+TiC) phases by spark plasma sintering and crystallization of amorphous phase.The synthesized powders and the consolidated ultrafine/fine-grained composites were examined by X-ray diffractometry(XRD),differential scanning calorimetry(DSC),scanning el... |
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| Keywords: | Ti-based composite spark plasma sintering mechanical alloying crystallization |
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