文档介绍：
连续锆基非晶复合材料钨丝体积分数对拉
伸行为的影响#
陈晓华,张保玉,惠希东*
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(北京科技大学新金属材料国家重点实验室,北京 100083)
摘要:纤维增强非晶复合材料(MGMCs)在军事等领域有潜在的应用。本文通过连续渗流方法
制备出钨丝直径相同,钨丝体积分数分别为 50%、55%以及 61%的钨丝增强锆基非晶合金复合
材料。研究表明,随着钨丝体积分数的增加,也就是随着钨丝间距的减小,非晶合金复合材
料的弹性模量、屈服强度、拉伸断裂强度和拉伸塑性得到同步提高。对断口形貌进行了分析,
研究发现不同体积分数钨丝在界面处产生的应力集中大小影响复合材料的拉伸力学行为。
关键词:复合材料;连续制备;非晶合金基体;力学性能
中图分类号:TB331
Effect of volume fraction of tungsten wire on tensile
mechanical behaviors of continuously manufactured
Zr-based bulk metallic posites
Chen Xiaohua, Zhang Baoyu, Hui Xidong
(State Key Laboratary of Advanced Metals and Materials,University of Science and Technology
Beijing,Beijing 100083)
Abstract: In this paper, Zr-based metallic glass posites (MGMCs) with 80μm
diameter tungsten wire in different volume fractions (50%、55% and 61%) were fabricated by
continuous infiltration casting process. It has been found that the elastic modulus, yield strength,
tensile fracture strength and elongation of metallic posite increase with the increase of
volume fraction of tungsten wire. Acording to the analysis of fracture surfaces posites after
tensile test, it was concluded that stress concentration at the interface had important effect on the
tensile mechanical properties posites.
Key words: Composite; Continuous infiltration process; Bulk metalllic glass Matrix; Mechanical
property
0 引言
与晶体材料相比,大块非晶有更优秀的力学,物理和化学性能
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