|
|||||
|
|
Structure and properties of Ni60(Nb100−xTax)34Sn6 bulk metallic glass alloys |
|
| Authors: | Haein Choi-Yim Michelle Tokarz William L Johnson |
| Institution: | a Department of Physics, Sookmyung Women’s University, Chungpa-Dong 2-Ka, Yongsan-Ku, Seoul 140-742, Republic of Korea b Center for Nanomaterials Science, 3062 HH Dow Building, Materials Science and Engineering Department, University of Michigan, Ann Arbor, MI, USA c W.M. Keck Laboratory of Engineering Materials, Mail Code 138-78, California Institute of Technology, Pasadena, CA 91125, USA |
| Abstract: | Refractory bulk metallic glasses and bulk metallic glass composites are formed in quaternary Ni-Nb-Ta-Sn alloy system. Alloys of composition Ni60(Nb100−xTax)34Sn6 (x = 20, 40, 60, 80) alloys were prepared by injection-casting the molten alloys into copper molds. Glassy alloys are formed in the thickness of half mm strips. With thicker strips (e.g., 1 mm), Nb2O5 and Ni3Sn phases and the amorphous phase form an in situ composite. Glass transition temperatures, crystallization temperatures, and ΔTx, defined as Tx1 − Tg (Tx1: first crystallization temperature, Tg: glass transition temperature) of the alloys increase dramatically with increasing Ta contents. These refractory bulk amorphous alloys exhibit high Young’s modulus (155-170 GPa), shear modulus (56-63 GPa), and estimated yield strength (3-3.6 GPa). |
| Keywords: | 61 10 Nz 61 43 Dq 62 20 &minus x |
| 本文献已被 ScienceDirect 等数据库收录！ | |