ZHAI W,ZHANG X Z,HU Z Z,et al. Effects of aging treatment on microstructure and mechanical properties of layered heterogeneous aluminum alloy fabricated by powder thixoforming[J]. Special Casting & Nonferrous Alloys,2026,46(10):1 565-1 574.
ZHAI W,ZHANG X Z,HU Z Z,et al. Effects of aging treatment on microstructure and mechanical properties of layered heterogeneous aluminum alloy fabricated by powder thixoforming[J]. Special Casting & Nonferrous Alloys,2026,46(10):1 565-1 574.DOI: 10.15980/j.tzzz.T20250157.
Effects of Aging Treatment on Microstructure and Mechanical Properties of Layered Heterogeneous Aluminum Alloy Fabricated by Powder Thixoforming
Layered heterogeneous structured aluminum alloy was fabricated using powder thixotropic forming process, and the effects of aging duration on microstructural evolution and mechanical properties were systematically investigated. The results indicate that peak performance of heterogeneous structured alloy is achieved after aging for 8 h with hardness values (for coarse grains and fine grains) of 118 HV and 148 HV, tensile strength of 565 MPa, and yield strength of 468 MPa. Furthermore, quantitative analysis clarifies the contributions of precipitation strengthening, solid solution strengthening, grain refinement strengthening, thermal mismatch strengthening, and geometrically necessary dislocation strengthening at different aging stages, revealing the dominant role of multi-mechanism synergy in enhancing the strength of alloy.
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