Two-stage solution treatment
By optimizing two-stage solution and ageing treatments, the alloy achieves refined and rounded primary and eutectic silicon phases while retaining stable heat-resistant phases, significantly enhancing high-temperature mechanical properties.
Xiao, Lairong · Liu, Guanchun · Peng, Zhenwu · Tu, Xiaoxuan · Su, Heng · Xiao, Yuxiang · Zhong, Qi · Wang, Sen · Cai, Zhenyang · Zhao, Xiaojun
Materials 2023
Roundness of primary Si reaches 1.46 and aspect ratio of eutectic Si reaches 2.56
High-temperature tensile properties at 350 °C improved compared to as-cast alloy