具有高强度的新型超轻复合浓缩合金

Novel Ultralight-Weight Complex Concentrated Alloys with High Strength.

作者信息

Jia Yuefei, Jia Yandong, Wu Shiwei, Ma Xindi, Wang Gang

机构信息

Laboratory for Microstructures, Institute of Materials, Shanghai University, Shanghai 200444, China.

出版信息

Materials (Basel). 2019 Apr 8;12(7):1136. doi: 10.3390/ma12071136.

DOI:10.3390/ma12071136

PMID:30965563

原文链接:https://pmc.ncbi.nlm.nih.gov/articles/PMC6480018/

Abstract

To explore a novel high strength and low modulus ultralight-weight complex concentrated alloys (ULW-CCAs), a series of light alloys are designed and explored based on some low-density and low modulus elements, such as Al, Li, Mg, Ca, Si, and Y. An AlLiMgSiCa₅Y (at %) CCA with a high specific strength of 327 KPa·m is successfully developed. After adjusting the composition, the AlLiMgCa₁Si₁ CCA with the good compressive plasticity is successfully developed. The AlLiMgCaSi and AlLiMgCaSi CCAs exhibit good plasticity of >45%, and >60%, respectively. These ULW-CCAs show the high specific strength, good ductility, and low Young's modulus, as compared with the previously reported CCAs.

摘要

为探索一种新型的高强度、低模量超轻复合浓缩合金（ULW-CCA），基于一些低密度和低模量元素（如Al、Li、Mg、Ca、Si和Y）设计并探索了一系列轻合金。成功开发出了比强度为327 KPa·m的AlLiMgSiCa₅Y（原子百分比）CCA。调整成分后，成功开发出了具有良好压缩塑性的AlLiMgCa₁Si₁ CCA。AlLiMgCaSi和AlLiMgCaSi CCA的塑性分别大于45%和大于60%。与先前报道的CCA相比，这些ULW-CCA具有高比强度、良好的延展性和低杨氏模量。