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5 不同热处理制度下Ti2448-LO和Ti2448-HO合金的室温力学性能

Table 5 Room temperature mechanical properties of Ti2448-LO and Ti448-HO alloys treated by different heat treatment processes

Alloy Heat treatment Rm / MPa A / % Ti2448-LO As hot-rolled 810 ± 42 13.8 ± 1.0 873 K, 10 min + 773 K, 4 h 950 ± 17 18.3 ± 2.5 923 K, 10 min + 733 K, 4 h 1047 ± 1 14.5 ± 0.1 Ti2448-HO As hot-rolled 912 ± 22 13.7 ± 3.9 873 K, 10 min + 773 K, 2 h 1146 ± 10 13.3 ± 1.1 923 K, 10 min + 733 K, 2 h 1128 ± 5 14.0 ± 0.7