摘要Based on a new approach for designing glassy alloy compositions, bulk Al-based alloys with good glass-forming ability (GFA) are synthesized. The cast Al86Si0.5Ni4.06Co2.94Y6Sc0.5 rod with a diameter of 1 mm shows almost fully amorphous structure besides about 5% fcc-Al nucleated in the center of the rod. The bulk alloy with high Al concentration exhibits an ultrahigh yield strength of 1.18GPa and maximum strength of 1.27GPa as well as an obvious plastic strain of about 2.4% during compressive deformation. This light Al-based alloy with good GFA and mechanical properties is promising as a new high specific strength material with good deformability.
Abstract：Based on a new approach for designing glassy alloy compositions, bulk Al-based alloys with good glass-forming ability (GFA) are synthesized. The cast Al86Si0.5Ni4.06Co2.94Y6Sc0.5 rod with a diameter of 1 mm shows almost fully amorphous structure besides about 5% fcc-Al nucleated in the center of the rod. The bulk alloy with high Al concentration exhibits an ultrahigh yield strength of 1.18GPa and maximum strength of 1.27GPa as well as an obvious plastic strain of about 2.4% during compressive deformation. This light Al-based alloy with good GFA and mechanical properties is promising as a new high specific strength material with good deformability.
(Thermal properties of amorphous solids and glasses: heat capacity, thermal expansion, etc.)
引用本文:
ZHUO Long-Chao;PANG Shu-Jie;WANG Hui;ZHANG Tao. Ductile Bulk Aluminum-Based Alloy with Good Glass-Forming Ability and High Strength[J]. 中国物理快报, 2009, 26(6): 66402-066402.
ZHUO Long-Chao, PANG Shu-Jie, WANG Hui, ZHANG Tao. Ductile Bulk Aluminum-Based Alloy with Good Glass-Forming Ability and High Strength. Chin. Phys. Lett., 2009, 26(6): 66402-066402.
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