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投稿时间：2013-07-15 修订日期：2013-07-18 录用日期：2013-07-19 网络发布日期：2013-12-23
投稿时间：2013-07-15 修订日期：2013-07-18 录用日期：2013-07-19 网络发布日期：2013-12-23
中文摘要: 采用铜模吸铸法制备出直径3 mm的[Zr0.72 x(Cu0.59Ni0.41)0.28-x]88Al12（x=0.05、0.10）棒状非晶复合材料。考察应变速率对合金压缩力学性能的影响。结果表明，随应变速率的增大，合金的塑性变形区域减小，锯齿流变现象逐渐消失；在相同成分下，随应变速率的增大，弹性模量逐渐升高，塑性应变和抗压强度则逐渐降低，屈服强度和断裂强度也基本呈下降趋势。在x=0.05、应变速率为0.55?10-4 s-1时，塑性应变、抗压强度和断裂强度均为最大值，分别为6.77%、1 758 MPa和1 629 MPa。
中文关键词: 大块锆基非晶复合材料 应变速率 断裂强度 塑性变形
Abstract:[Zr0.72 x(Cu0.59Ni0.41)0.28-x]88Al12（x=0.05,0.10）bulk amorphous composites rods with the diameters of 3 mm were prepared by copper mold casting technique. The effects of strain rates on mechanical properties of amorphous composites were studied. The results show that plastic strain and serrated flow decreases with rise of strain rate. Under the same alloy composition, elasticity modulus enhances with rise of strain rate, while plastic strain and compressive strength decrease. On the whole, yield strength and fracture strength also decrease. The plastic strain, compressive strength and breaking strength reaches the maximum value which is 6.77%, 1 758 MPa and 1 629 MPa, respectively under the conditions of x=0.05 and strain rate of 0.55×10-4 s-1.
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基金项目:国家自然科学基金资助项目(50961008，51061008)；973计划前期研究专项（2011CB612203）；甘肃省青年科技基金计划项目(1107RJYA275)
引用文本：
张亚娟,寇生中,李春燕,袁小鹏,赵燕春,徐 娇,蒲永亮.应变速率对锆基非晶复合材料力学性能的影响[J].有色金属（冶炼部分）,2014(1):54-57.
ZHANG Yajuan,KOU Shengzhong,LI Chunyan,YUAN Xiaopeng,ZHAO Yanchun,XU Jiao,PU Yongliang.Effects of Strain Rates on Mechanical Properties of Zr-based Bulk Metallic Glass Composites[J].Nonferrous Metals (Extractive Metallurgy),2014(1):54-57.
张亚娟,寇生中,李春燕,袁小鹏,赵燕春,徐 娇,蒲永亮.应变速率对锆基非晶复合材料力学性能的影响[J].有色金属（冶炼部分）,2014(1):54-57.
ZHANG Yajuan,KOU Shengzhong,LI Chunyan,YUAN Xiaopeng,ZHAO Yanchun,XU Jiao,PU Yongliang.Effects of Strain Rates on Mechanical Properties of Zr-based Bulk Metallic Glass Composites[J].Nonferrous Metals (Extractive Metallurgy),2014(1):54-57.
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