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利用X射线、光学金相和透射电镜等手段,研究了由各种加热温度、不同冷速(水淬、空冷和炉冷)对BT3-1钛合金微观组织的影响。从β区温度水淬,形成α″马氏体;在(α+β)相区上部温度水淬,得α″和α相;900℃水淬,可得α″、α和β相;由850℃水淬只获α和β相。考察了α″马氏体的点阵常数变化、亚结构变化和硬度的变化。自各固溶温度空冷或炉冷,获得各种形态的α相和β相。
The effects of heating temperature and cooling rate (water quenching, air cooling and furnace cooling) on the microstructure of BT3-1 titanium alloy were studied by means of X-ray, optical metallography and transmission electron microscopy. From the β zone temperature water quenching, the formation of α “martensite; (α + β) phase zone temperature water quenching, α” and α phase; 900 ℃ water quenching, available α “, α and β phase; from Only the α and β phases were obtained by water quenching at 850 ℃ .The changes of lattice constant, substructure and hardness of α ”martensite were investigated. From each solution temperature air cooling or furnace cooling, to obtain various forms of α and β phase.