利用可控冷却速度热处理装置对Ti-6A1-2Zr-1 Mo-1V合金进行了β热处理实验,并研究了该合金原始β晶粒尺寸和冷却速度对片层组织的影响.结果表明,原始β晶界是α片层的主要形核地点,原始β晶粒内可形成多个α集束团,同一α集束内α片层几乎成同一取向;随原始β晶粒尺寸降低,集束尺寸降低,而原始β晶粒尺寸对α片层厚度影响不大;随冷却速度增加,α片层厚度先快速降低,后缓慢降低,而集束尺寸则呈线性降低;α片层厚度与冷却速度呈反比关系:λ=3.94+ 9.24/v.
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