一种新的具有室温大塑性的Zr基块体非晶合金

稀有金属材料与工程, 2009, 38(1): 54-58.

一种新的具有室温大塑性的Zr基块体非晶合金

孙亚娟 ^1, , 邢大伟 ^2, , 黄永江 ^3, , 沈军 ^4,

1.哈尔滨工业大学,黑龙江,哈尔滨,150001

2.哈尔滨工业大学,黑龙江,哈尔滨,150001

3.哈尔滨工业大学,黑龙江,哈尔滨,150001

4.哈尔滨工业大学,黑龙江,哈尔滨,150001

基金项目: 国家自然科学基金(50771040) 教育部新世纪优秀人才支持计划

关键词： Zr基块体非晶合金 , 塑性 , 剪切带 , 纳米晶

A New Type of Zr-Al-Ni-Cu Bulk Metallic Glass with High Plasticity at Room Temperature

通过二元共晶比例法设计了一种新的具有室温大塑性的Zr51Al9.96Ni14.34Cu24.7块体非晶合金.该合金室温压缩最大强度达2356 MPa,塑性应变达14.6%.高分辨透射电镜(HRTEM)及热分析(DSC)结果表明,压缩过程的变形诱发了纳米晶化.纳米晶的形成一方面诱发新的剪切带的形成,增加了剪切带的密度;另一方面阻碍了剪切带的进一步扩展,使大量初始剪切带与二次剪切带的交割和分叉,因而导致所研究非晶合金优异的塑性变形能力.

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材料期刊网

一种新的具有室温大塑性的Zr基块体非晶合金

A New Type of Zr-Al-Ni-Cu Bulk Metallic Glass with High Plasticity at Room Temperature

参考文献