Ti-22Al-25Nb合金环件轧制的模拟及验证  

Simulation and Verification of Ti-22Al-25Nb Alloy Ring Rolling

作　　者：马雄 张继[1,2] 魏志坚 张晓越[4] 梁晓波 叶俊青 董志国 MA Xiong;ZHANG Ji;WEI Zhijian;ZHANG Xiaoyue;LIANG Xiaobo;YE Junqing;DONG Zhiguo(Beijing CISRI-Gaona Materials&Technology Co.,Ltd.,Beijing 100081,China;Central Iron&Steel Research Institute,Beijing 100081,China;Guizhou Anda Aviation Forging Co.,Ltd.,Anshun 561005,China;AECC Shenyang Engine Research Institue,Shenyang 110015,China)

机构地区：[1]北京钢研高纳科技股份有限公司,北京100081 [2]钢铁研究总院,北京100081 [3]航空工业贵州安大航空锻造有限责任公司,贵州安顺561005 [4]中国航发沈阳发动机研究所,辽宁沈阳110015

出　　处：《热加工工艺》2021年第23期95-98,共4页Hot Working Technology

基　　金：国家科技重大专项(2017-VI-0004-0074,JPPT-135-2-030)。

摘　　要：使用ABAQUS有限元软件对Ti-22Al-25Nb合金环件进行轧制模拟,分析轧制过程中的应力、应变分布及轧制力变化,并通过试验验证模拟的准确性。结果表明,有限元模拟可以很好地呈现环件轧制过程。等效应变分布表明环坯上下端面的外侧是累积应变最大的区域,产生的塑性变形最为剧烈。通过等效应力分析发现,轧制开始段产生的瞬时应力较大,应设定合理的进给量。径向和轴向轧制力分析显示环轧机可以满足Ti-22Al-25Nb合金环件的轧制需要。最后通过环件的组织分析验证了模拟的合理性。The rolling of Ti-22Al-25Nb alloy ring was simulated by using ABAQUS finite element software. The stress distribution, strain distribution and change of rolling force in the rolling process were analyzed, and the accuracy of the simulation was verified by experiments. The results show that the finite element simulation can well present the rolling process of ring parts. The equivalent strain distribution indicates that the outer side of the upper and lower end surfaces of the ring billet is the region with the largest cumulative strain, and the plastic deform ation is the most severe. Through equivalent stress analysis, it is found that the instantaneous stress generated in the beginning section of rolling is large, and a reasonable feed amount should be set. The radial and axial rolling force analysis shows that the ring mill can meet the rolling requirements of Ti-22 Al-25 Nb alloy ring. Finally, the rationality of simulation is verified by the microstructure analysis of the ring part.

关 键 词：TI-22AL-25NB合金 环轧模拟 组织分析 

分 类 号：TG335.11[金属学及工艺—金属压力加工]