Study on the Influence of Annealing at Different Temperatures on the Plasticity and Microstructure of Al-Mg-Ga-Sn Soluble Aluminum Alloy
MA Ning1, ZHU Jianfeng1,*, CHANG Ke2, QIN Yuxing1, MAO Yong3, MA Wenzong3
1 School of Materials Science and Engineering, Shaanxi University of Science & Technology, Xi'an 710021, China 2 Xi'an Hantang Analysis and Testing Co., Ltd., Xi'an 710016, China 3 Machinery Manufacturing Plant of Changqing Petroleum Exploration Bureau Co., Ltd., Xi'an 710201, China
Abstract: Due to its exceptional mechanical properties and the ability of controllable dissolution upon stress application, material crafted from soluble alloys shows highly valuable value for the extraction of low-permeability, unconventional oil and gas reserves. Moreover, its capacity to produce hydrogen gas is promising for advancements in hydrogen generation and energy storage technologies. However, challenging service conditions, typically in the deep subsurface during hydraulic fracturing operations, can result in alloy failure owing to inadequate plasticity and eventual fracture. Therefore, enhancing the plasticity of soluble alloys to prevent fracture-induced failure is critical for their effective utilization. Conventional soluble cast alloys are prone to defects that initiate fractures, which highlights the need for improvement. In this study, a high-temperature melting technique was employed to produce Al-Mg-Ga-Sn soluble aluminum alloys, and the impact of heat treatment on their plasticity was examined. By subjecting the alloys to a range of annealing temperatures and heat treatment processes, the microstructure and plasticity was refined and its dissolution mechanism in water was also explored. SEM, EDS, XRD, and other analytical methods were used for detailed microscopic morphology analysis and characterization. Furthermore, the dissolution performance, electrochemical behavior, plasticity, and hardness were assessed by using the weight loss method, electrochemical workstation, and microhardness tester. The findings reveal that annealing at 470 ℃ for 2 h during the heating phase, followed by a 12 h soak, and subsequent air cooling, is optimal for the Al-Mg-Ga-Sn soluble aluminum alloy. This heat treatment process is not only effective, but also simple, suggesting its potential as a broadly applicable technique for the treatment of soluble alloys.
马宁, 朱建锋, 常柯, 秦宇星, 毛勇, 马文宗. 不同温度退火热处理对Al-Mg-Ga-Sn可溶铝合金塑性及组织的影响研究[J]. 材料导报, 2025, 39(17): 24080053-8.
MA Ning, ZHU Jianfeng, CHANG Ke, QIN Yuxing, MAO Yong, MA Wenzong. Study on the Influence of Annealing at Different Temperatures on the Plasticity and Microstructure of Al-Mg-Ga-Sn Soluble Aluminum Alloy. Materials Reports, 2025, 39(17): 24080053-8.
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2025, Vol. 39 
