摘要
研究了热处理制度对Ti31合金显微组织与力学性能的影响。结果表明,随着退火温度的升高,初生α相含量减少,尺寸逐渐减小,次生α片层长宽比增加。相比于单重热处理制度,双重热处理后的初生α晶粒尺寸以及次生α片层宽度会轻微的长大;退火温度的上升有利于提高Ti31合金的屈强比、塑性和冲击韧性。经过920℃×1h/AC+800℃×1h/AC热处理后的Ti31合金具有最优异的综合力学性能。
The effects of heat treatment on microstructure and mechanical properties of Ti31 alloy were studied.The results show that,with the increase of the annealing temperature,the content of primary α phase decreases and the size decreases.The ratio of length to width of secondary α lamellae increases.Compared with the single heat treatment system,the primary α grain size and the secondary α lamellar width after double heat treatment grow slightly.The increase of annealing temperature is beneficial to improve the yield ratio,plasticity and impact toughness of Ti31 alloy.The Ti31 alloy after heat treatment at 920 ℃×1 h/AC 800 ℃×1 h/AC has the best comprehensive mechanical properties.
作者
李维
康聪
侯智敏
李进元
LI Wei;KANG Cong;HOU Zhimin;LI Jinyuan(Western Titanium Technologies Co.,Ltd.,Xi'an 710201,China)
出处
《热加工工艺》
北大核心
2019年第16期169-170,173,共3页
Hot Working Technology
关键词
Ti31合金
热处理
显微组织
力学性能
Ti31 alloy
heat treatment
microstructure
mechanical properties
