铸造2024，Vol.73Issue(7)：941-946,6.
原位自生富Fe相增强Mg-Cu-Ag-Gd-Fe非晶复合材料的制备及其力学性能
Fabrication and Mechanical Properties of In-Situ Fe-Rich Phase Reinforced Mg-Cu-Ag-Gd-Fe Amorphous Alloy Matrix Composites
摘要
Abstract
Based on the differences in enthalpy of mixing between elements,we had successfully introduced in-situ Fe-rich phase during solidification via microalloying with Fe into Mg-based amorphous alloys.The Fe-rich phase distributed in the Mg-based amorphous alloy matrix homogeneously with an average size of 8 μm and volume fraction of 14％.Compared to the brittle fracture of the base monolithic amorphous alloy,the in-situ Fe-rich phase reinforced Mg-based amorphous alloy matrix composites showed obvious yielding and plastic deformation.The plastic strain was as high as 9.5％,the fracture strength was also higher than the base alloy.By observing the fracture morphology,we found that the Fe-rich phase could effectively hinder the rapid propagation of main shear band in the matrix,causing the deflection and multiplication of it.The generated multiple shear bands contributed to the improved mechanical properties of the composites.关键词
非晶复合材料/室温塑性/剪切带/富Fe相Key words
amorphous alloy matrix composites/room-temperature plasticity/shear band/Fe-rich phase分类
矿业与冶金引用本文复制引用
黄润华,郭威,吕书林,王锦程,吴树森..原位自生富Fe相增强Mg-Cu-Ag-Gd-Fe非晶复合材料的制备及其力学性能[J].铸造,2024,73(7):941-946,6.基金项目
国家自然科学基金(No.52101138) （No.52101138）
湖北省自然科学基金(No.2023AFB798) （No.2023AFB798）
深圳市科技计划资助(No.JCYJ20220530160813032) （No.JCYJ20220530160813032）
西北工业大学凝固技术国家重点试验室开放课题(No.SKLSP202309). （No.SKLSP202309）
