Formation and mechanical properties of Zr-based bulk metallic glass composites with high oxygen levels  

作　　者：LIU ZengQian YANG YaoWei LI Ran HUANG Lu ZHANG Tao 

机构地区：[1]Key Laboratory of Aerospace Materials and Performance(Ministry of Education),School of Materials Science and Engineering,Beihang University,Beijing 100191,China

出　　处：《Chinese Science Bulletin》2012年第30期3931-3936,共6页

基　　金：supported by the National Basic Research Program of China (2007CB613900);the National Natural Science Foundation of China(51071008);the Innovation Foundation of BUAA for PhD Graduate sand Fundamental Research Funds for the Central Universities

摘　　要：Zr-based bulk metallic glass(BMG) composites with in situ formed Y 2 O 3 particle reinforcements were synthesized by proper additions of Y to ultrahigh-oxygen-containing glass-forming alloy precursors.Microstructures,thermal stabilities,and mechanical properties of the composites were investigated.Glass formation was greatly enhanced by Y additions in the alloys and the resultant particles were homogenously distributed in the glassy matrix,allowing for the fabrication of oxide dispersion strengthened BMG composites.The compressive strength and hardness increased by 10% and 20%,respectively,with the introduction of Y 2 O 3 particles.These results are significant for the design and production of Zr-based BMGs and BMG composites with improved properties using commercial high-oxygen content raw materials under industrial conditions.Zr-based bulk metallic glass （BMG） composites with in situ formed Y203 particle reinforcements were synthesized by proper additions of Y to ultrahigh-oxygen-containing glass-forming alloy precursors. Microstructures, thermal stabilities, and mechanical properties of the composites were investigated. Glass formation was greatly enhanced by Y additions in the alloys and the result- ant particles were homogenously distributed in the glassy matrix, allowing for the fabrication of oxide dispersion strengthened BMG composites. The compressive strength and hardness increased by 10% and 20%, respectively, with the introduction of Y203 particles. These results are significant for the design and production of Zr-based BMGs and BMG composites with improved properties using commercial high-oxygen content raw materials under industrial conditions.

关 键 词：ZR基非晶合金 大块金属玻璃 复合材料 氧含量 力学性能 氧化物弥散强化 玻璃形成 BMG 

分 类 号：TG139.8[一般工业技术—材料科学与工程]