Microstructure and Mechanical Properties of Cu50Zr42Al8 Bulk Metallic Glass
(0) Microstructure of Cu50Zr42Al8 tapered sample was characterized with X-ray diffraction, differential scanning calorimetry and optical microscopy. Surface amorphous region, center more crystalline region and transition region between the two exist under different cooling rate, respectively. The critical diameter of the bulk glassy alloy for Cu50Zr42Al8 is up to 4.8mm. The φ4mm BMG exhibits high compressive fracture strength of 2260MPa with elastic srtain of 2.0％ and plastic strain of 0.4％. The mechanical properties of Cu50Zr42Al8 bulk metallic glass and its composite containing CuZr and CU10Zr7 crystallizing phases were also discussed. The φ5mm BMG composites exhibits a combination of high compressive fracture strength (1849MPa) and yielding strength (1670MPa) with elastic strain of 1.6％ and plastic strain of 1.9％, the final fracture behavior of which is controlled by competition of the two crystallizing phases.
Cu-based metallic glasses cooling rate microstructure mechanical properties
ZHAO Yan-chun KOU Sheng-zhong WANG Ren-jun SUO Hong-li DING Yu-tian
State Key Laboratory ofGansu Advanced Non-ferrous Metal Materials,Lanzhou University of Technology,L State Key Laboratory ofGansu Advanced Non-ferrous Metal Materials,Lanzhou University of Technology,L The Key Laboratory of Advanced Functional Materials,Ministry of Education,Beijing University of Tech
国际会议
The Fourth Asian Conference on Heat Treatment and Surface Engineering(第四届亚洲热处理及表面工程大会)
北京
英文
167-170
2009-10-27（万方平台首次上网日期，不代表论文的发表时间）