@misc{ma_microstructures_and_2024, 
author={Ma, He,Meng, Fan-Zhi,Yang, Qiang,Xie, Ze-Feng,Huang, Yuan-Ding,Qiu, Xin},
title={Microstructures and mechanical properties of a commercial Mg–Al–Zn–Mn alloy with various hot-extrusion processes},
year={2024},
howpublished = {journal article},
doi = {https://doi.org/10.1007/s12598-023-02522-7},
abstract = {The commercial Mg-6Al-1Zn-0.15Mn wt% (AZ61) alloy was processed using both differential temperature extrusion (DTE) and conventional isothermal extrusion (ITE) methods. Microstructural characterization revealed that the DTE process promoted grain refinement (~0.8 μm) and dynamic precipitation of the Mg₁₇Al₁₂ phase in the AZ61 alloy. Furthermore, lowering the die temperature increased the volume fraction of dynamically recrystallized (DRXed) grains. Mechanical property comparisons showed that the alloy extruded at a die temperature of 130 °C exhibited higher strength. Despite achieving an ultimate tensile strength of ~400 MPa and a yield strength of ~350 MPa, the alloy maintained an elongation to fracture of ~10%. Additionally, a higher dislocation density was observed in the DTE-processed samples, especially in the non-recrystallized regions, and transmission electron microscopy (TEM) analysis confirmed that these dislocations were of the <a> type. The results indicate that the high strength arises from finer DRXed grains, a greater volume fraction of DRXed regions, higher dislocation density, and dynamic precipitation strengthening. The DTE process demonstrates potential for application across various magnesium alloy systems and offers an effective approach to achieving high-strength AZ61 alloy.},
note = {Online available at: \url{https://doi.org/10.1007/s12598-023-02522-7} (DOI). Ma, H.; Meng, F.; Yang, Q.; Xie, Z.; Huang, Y.; Qiu, X.: Microstructures and mechanical properties of a commercial Mg–Al–Zn–Mn alloy with various hot-extrusion processes. Rare Metals. 2024. vol. 43, no. 3, 1329-1336. DOI: 10.1007/s12598-023-02522-7}}