热处理对Ti5211钛合金微观组织和力学性能的影响

基金项目:

洛阳市科技重大专项（LK170701）

详细信息

Effect of Heat Treatment on Microstructure and Mechanical Properties of Ti5211 Plates

1. Luoyang Ship Material Research Institute, Luoyang 471023, China;
2. Military Representative Office of Ministry of the Navy Equipment in Huludao District, Huludao 125000, China

摘要: 研究了再结晶退火温度对Ti5211钛合金板材微观组织和力学性能的影响。结果表明，等轴化程度随热处理温度的升高而提升，次生α相逐步析出并长大，950℃退火后为含片层次生α相的双态组织，965℃退火后为等轴组织。随着热处理温度的升高，室温强度降低，塑性变化不大，冲击韧性先升高后降低。
- 钛合金板材 /
- 热处理 /
- 组织 /
- 力学性能
Abstract: The effects of recrystallization annealing temperature on the microstructure and mechanical properties of Ti5211 titanium alloy plates are studied. The results show that with the increasing of annealing temperature, primary α phase tends to change from long columnar to be equiaxed, and the secondary α phase precipitates gradually and grows up. After being annealed at 950 ℃, the microstructure is a bimodal structure with lamellar α phase, and after being annealed at 965 ℃, it is an equiaxed structure. With the increasing of annealing temperature, the room temperature strength decreases, the room temperature plasticity shows no obvious change, and the impact toughness first increases and then decreases.
- Ti5211 titanium plates /
- heat treatment /
- microstructure /
- mechanical properties