| 新型铜合金/非晶复合材料的挤压成形特性 |
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| 引用本文： | 刘勇,张丽,郭洪民,杨湘杰. 新型铜合金/非晶复合材料的挤压成形特性[J]. 中国有色金属学报, 2011, 21(5) |
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| 作者姓名： | 刘勇 张丽 郭洪民 杨湘杰 |
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| 作者单位： | 1. 南昌大学机电工程学院,南昌,330031
2. 南昌大学材料科学与工程学院,南昌,330031 |
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| 基金项目： | 国家自然科学基金资助项目，国家科技支撑计划项目，江西省铜钨新材料重点实验室开放基金资助项目，江西省国际合作项目，江西省自然科学基金资助项目，江西省教育厅科学基金资助项 |
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| 摘 要： | 基于大块非晶在过冷液相区间具有较好的热塑性成形特点,选择铜基非晶Cu40Zr44Ag8Al8和铜合金,通过挤压成形工艺,制备出一种新型的铜合金/非晶复合材料;在703 K和挤压速度为0.4 mm/min下对该复合材料进行挤压,获得铜合金、非晶复合材料棒材.通过光学金相(OM)、X射线衍射(XRD)、示差扫描量热分析(DSC)和维氏硬度测试(HV)对挤压变形前、后芯部非晶进行形貌观察和结构分析.结果表明:芯部非晶在挤压前期呈不均匀分布,而后分布非常均匀;结合XRD、DSC和硬度的结果分析,在703 K下挤压后,芯部非晶没有发生晶化.
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| 关 键 词： | 铜基非晶 热塑性成形 复合材料 晶化 过冷液相区间 |
Coextrusion forming characteristics of novel Cu alloy/bulk metallic glass composite |
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| LIU Yong,ZHANG Li,GUO Hong-min,YANG Xiang-jie. Coextrusion forming characteristics of novel Cu alloy/bulk metallic glass composite[J]. The Chinese Journal of Nonferrous Metals, 2011, 21(5) |
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| Authors: | LIU Yong ZHANG Li GUO Hong-min YANG Xiang-jie |
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| Affiliation: | LIU Yong1,ZHANG Li1,GUO Hong-min2,YANG Xiang-jie1(1.School of Mechatronics Engineering,Nanchang University,Nanchang 330031,China,2.School of Materials Science and Engineering,China) |
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| Abstract: | A novel Cu alloy/bulk metallic glass(BMG) composite was fabricated through the coextrusion process,based on the excellent thermoplastic forming characteristics of BMG in the supercooled liquid region(SLR).The Cu-based amorphous Cu40Zr44Ag8Al8 and pure Cu alloy were selected as components.The Cu alloy/BMG composite bar was easily fabricated at extrusion temperature of 703 K and extrusion speed of 0.4 mm/min.The morphology and structure of the core BMG before and after the coextrusion with Cu were characteriz... |
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| Keywords: | Cu-based bulk metallic glass thermoplastic forming composite crystallization supercooled liquid region |
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