BTi62鈦合金退火溫度與組織和性能的關(guān)系
發(fā)布人:上海艾荔艾合金股份有限公司www.shailiai.cn
更新時間:2016-01-19
研究了退火溫度對BTi62鈦合金棒材顯微組織及室溫、高溫力學(xué)性能的影響。研究表明:BTi62鈦合金棒材在700~870 ℃退火,顯微組織均由βT+等軸α組成,隨著退火溫度的升高,室溫強度降低,室溫塑性略有提高,高溫抗拉強度、斷面收縮率略有升高,屈服強度、伸長率無明顯變化。與目前國內(nèi)使用的同規(guī)格TC4鈦合金棒材相比,BTi62合金具有略優(yōu)于TC4鈦合金的室溫、高溫拉伸性能。
BTi62鈦合金退火溫度與組織和性能的關(guān)系Relationship between annealing temperature and?microstructure and properties of BTi62 titanium alloy研究了退火溫度對BTi62鈦合金棒材顯微組織及室溫、高溫力學(xué)性能的影響。研究表明:BTi62鈦合金棒材在700~870 ℃退火,顯微組織均由βT+等軸α組成,隨著退火溫度的升高,室溫強度降低,室溫塑性略有提高,高溫抗拉強度、斷面收縮率略有升高,屈服強度、伸長率無明顯變化。與目前國內(nèi)使用的同規(guī)格TC4鈦合金棒材相比,BTi62合金具有略優(yōu)于TC4鈦合金的室溫、高溫拉伸性能。
The effects of annealing temperature on the microstructure, room temperature and high temperature mechanical properties of BTi62 titanium alloy bars were studied. The results show that the microstructure of the alloy is composed of transformed β-phase and equiaxed α phase when BTi62 titanium alloy rods are annealed in the temperature range of 700?870 ℃. With the increase of annealing temperature, its room temperature strength decreases, room temperature ductility increases little, high-temperature tensile strength and area shrinkage slightly increase, while yield strength and elongation have no clear change when it is annealed in the range of 780?870 ℃. Compared with TC4 titanium alloy bars of the same specifications in domestic at present, BTi62 alloy has slightly better tensile properties at room and high temperatures.
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