摘要
热裂与其合金的准固态力学性能密切相关。本文利用自制的准固态力学性能测试装置,对Al—2％Si合金的准固态力学性能进行了研究,测试结果表明,该合金的热脆性温度区间为26℃,在热脆性区间其强度最大值仅为0.58MPa,易产生热裂。
Semi-solid mechanical properties of alloys have a great effect on the hot-tearing defects in castings. In the paper, the mechanical properties of Al-2%Si alloy in semi-solid state during solidification have been investigated with a self-made measuring apparatus. The results obtained show that the hot-shortness temperatrue interval of this alloy is 26℃ and maximum strenghth only 0.58MPa, thus the hot-tearing is more likely to occur within this temperature interval during casting process.
基金
山西省青年科学基金资助
关键词
热裂
准固态
力学性能
铝硅合金
hot-tearing
semi-solid state
mechanical properties
