研究了温度、应力、晶粒度对TC4合金应力松弛的影响.结果表明,TC4合金应力松弛行为对材料的组织形态和外界试验条件极为敏感.温度升高时,松弛速率大大加快,应力松弛极限降低;不同初应力作用下,应力松弛极限相同,符合应力松弛第一定律;600℃时小晶粒材料应力松弛速率高于大晶粒材料.
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