Novel Ultralight-Weight Complex Concentrated Alloys with High Strength

Materials

Yuefei Jia¹  Gang Wang¹  Yandong Jia¹  Xindi Ma¹  Shiwei Wu¹ 

[1] Laboratory for Microstructures, Institute of Materials, Shanghai University, Shanghai 200444, China;

关键词: ultralight-weight complex concentrated alloys;    high specific strength;    low Young’s modulus;   

DOI  :  10.3390/ma12071136

来源: DOAJ

【 摘 要 】

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 Al_19.9Li₃₀Mg₃₅Si₁₀Ca₅Y_0.1 (at %) CCA with a high specific strength of 327 KPa·m⁻³ is successfully developed. After adjusting the composition, the Al₁₅Li₃₅Mg₄₈Ca₁Si₁ CCA with the good compressive plasticity is successfully developed. The Al₁₅Li₃₈Mg₄₅Ca_0.5Si_1.5 and Al₁₅Li₃₉Mg₄₅Ca_0.5Si_0.5 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.

【 授权许可】

Unknown