热处理
熱處理
열처리
HEAT TREATMENT
2009年
4期
36-40
,共5页
BT25钛合金%等温锻造%显微组织%力学性能
BT25鈦閤金%等溫鍛造%顯微組織%力學性能
BT25태합금%등온단조%현미조직%역학성능
BT25 titanium alloy%isothermal forging%microstructure%mechanical property
BT25钛合金制航空发动机压气机盘因直径大、形状复杂,要采用等温锻造.研究了锻造温度对BT25钛合金组织与性能的影响.试验结果表明,等温锻造温度不同,合金的组织和性能也不同.与在α+β两相区锻造和在(α+β)→β相变点以上30℃锻造的相比,在(α+β)→β相变点以下10～15℃的温度锻造,具有等轴α相、条状α相和β相的合金综合性能最佳.
BT25鈦閤金製航空髮動機壓氣機盤因直徑大、形狀複雜,要採用等溫鍛造.研究瞭鍛造溫度對BT25鈦閤金組織與性能的影響.試驗結果錶明,等溫鍛造溫度不同,閤金的組織和性能也不同.與在α+β兩相區鍛造和在(α+β)→β相變點以上30℃鍛造的相比,在(α+β)→β相變點以下10～15℃的溫度鍛造,具有等軸α相、條狀α相和β相的閤金綜閤性能最佳.
BT25태합금제항공발동궤압기궤반인직경대、형상복잡,요채용등온단조.연구료단조온도대BT25태합금조직여성능적영향.시험결과표명,등온단조온도불동,합금적조직화성능야불동.여재α+β량상구단조화재(α+β)→β상변점이상30℃단조적상비,재(α+β)→β상변점이하10～15℃적온도단조,구유등축α상、조상α상화β상적합금종합성능최가.
The compressor disk of BT25 titanium alloy is to be isothermally forged because of its large diameter and complicated configuration. The effect of forging temperature on the microstructure and the property of BT25 titanium alloy was investigated. The test results indicate that BT25 alloy isothermally forged at different temperatures will provide different microstructures and properties,and that BT25 alloy isothermally forged at the temperature 10～15 ℃ below (α+β)→β transformation temperature and with equiaxial α-phase, streaky α-phase and β-phase will provide the best combination of properties as compared with the alloy isothermally forged respectively at (α+β) phase region temperature and at the temperature 30 ℃ above (α+β)→β transformation temperature.
