O含量对Ti2448合金时效析出行为及力学性能的影响

李丹, 宫得伦, 郝玉琳

Effect of O Content on the Aging Precipitation Behavior and Mechanical Properties of Ti2448 Alloy

LI Dan, GONG Delun, HAO Yulin

表4 923 K、10 min + 773 K、 1~4 h双步热处理后2种合金中析出相的厚度、数密度及体积分数

Table 4 τ, ρ, and V of the precipitates in Ti2448-LO and Ti2448-HO alloys under 923 K, 10 min + 773 K, 1-4 h conditions

Alloy Aging time / h τ / nm ρ / μm-2 V / % Ti2448-LO 1 28.3 ± 9.5 64.2 ± 4.5 30.0 ± 3.3 2 35.1 ± 12.3 59.0 ± 16.4 31.2 ± 2.5 4 37.4 ± 15.2 58.1 ± 1.6 35.9 ± 5.3 Ti2448-HO 1 31.4 ± 12.2 47.9 ± 9.8 34.3 ± 4.5 2 47.2 ± 34 35.6 ± 17.9 36.0 ± 1.7 4 51.9 ± 42.9 20.5 ± 3.5 36.6 ± 6.0