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将典型Ti14合金在半固态进行了1次锻造成形,对锻造试样进行拉伸,研究其室温和高温的力学性能,并对拉伸断裂机理进行了分析。结果表明:不同的半固态温度和变形量对锻造试样的力学性能有明显的影响,随着温度和变形量的提高,强度增大,塑性降低,在1050℃和75%变形量时,合金强度最高;高温拉伸与室温拉伸表现出相同的趋势。随着温度的升高,拉伸断口由典型的穿晶断裂转变为沿晶断裂和穿晶断裂的混合断裂。
The typical Ti14 alloy was forged for 1 time in the semi-solid state, the forging samples were stretched, the mechanical properties at room temperature and high temperature were studied, and the tensile fracture mechanism was analyzed. The results show that the different semi-solid temperature and deformation have a significant effect on the mechanical properties of forged samples. With the increase of temperature and deformation, the strength increases and the plasticity decreases. At 1050 ℃ and 75% of deformation, the alloy The highest tensile strength; high temperature tensile and tensile at room temperature showed the same trend. As the temperature increases, the tensile fracture changes from the typical transgranular fracture to the intergranular and transgranular fracture.