TC17合金整体叶盘等温锻造过程数值模拟及工艺参数影响

发布时间：2018-01-29 12:00

本文关键词： TC钛合金整体叶盘 β相等温锻造有限元模拟应变　出处：《锻压技术》2017年06期 　论文类型：期刊论文

【摘要】：采用二维有限元模拟软件Deform-2D对TC17钛合金整体叶盘锻件的等温β模锻过程进行数值模拟,分析了整体叶盘不同部位的应变场。根据有限元模拟结果对TC17钛合金整体叶盘锻件的荒坯尺寸及工艺参数进行优化,并进行了TC17钛合金等温锻造成形工艺试验。试验结果表明,等温β模锻工艺可使TC17钛合金组织中粗大原始β相晶粒得到充分的形变,晶界析出弯曲、断续的细小α相,晶内析出交错、细小的次生α相,呈现理想的网篮组织;当应变达到0.75时,可使得整体叶盘锻件的强度、塑性及断裂韧性实现理想匹配。
[Abstract]:The isothermal 尾 die forging process of TC17 titanium alloy integral blade plate forgings was numerically simulated by two-dimensional finite element simulation software Deform-2D. The strain field of different parts of the integral disk was analyzed and the blank size and technological parameters of the TC17 titanium alloy integral disk forging were optimized according to the finite element simulation results. The isothermal forging process test of TC17 titanium alloy was carried out. The results showed that isothermal 尾 die forging process could make the coarse and original 尾 phase grains in TC17 titanium alloy fully deform. The grain boundary precipitates the fine 伪 phase, the fine 伪 phase in the grain boundary, the interlaced and the fine secondary 伪 phase in the crystal, showing the ideal basket structure. When the strain reaches 0.75, the strength, plasticity and fracture toughness of the integral disk forgings can be matched perfectly.
【作者单位】：中航工业陕西宏远航空锻造有限责任公司;西北工业大学材料科学与工程学院;
【基金】：陕西省科技创新项目(20146102120054)
【分类号】：TG319
【正文快照】： TC17钛合金是一种富β稳定元素的α+β型两相钛合金,其强度超过Ti-6Al-4V和Ti-6242钛合金,具有较高的蠕变抗力,最高工作温度可达427℃,主要用于制造航空发动机的风扇和压气机整体叶盘等部件[1-2]。随着航空工业的发展,新一代航空发动机的压气机盘、风扇盘在服役过程中将承受更

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