中文摘要：

基于ABAQUS软件的Explicit/Standard模块建立了Ni-Cr-W-Mo合金异型件热旋成形的多道次热力耦合三维有限元模型,研究了Ni-Cr-W-Mo合金异型件热旋成形过程中的应力应变场的分布以及成形规律和常见缺陷。结果表明,考虑到缺陷的形成以及成形道次尽可能减少等因素,旋压间隙应大于3.7mm;此外,工件在靠近中心轴的部分贴模性非常好,但越靠近工件口部,不贴模的趋势越明显。

英文摘要：

Based on the Explicit/Standard modules of software ABAQUS,a 3D finite element model of Ni-Cr-W-Mo superalloy workpiece with strange shape multi-pass is built.The distribution and variation features of stress-strain,hot spinning regular pattern,and common defects are investigated in the forming process for the Ni-Cr-W-Mo superalloy workpiece with strange shape.The results show that by taking some factors,such as the defects forming,minimizing forming pass,etc into account,the spinning gap should be bigger than 3.7mm.The gap between blank and mandrel is quite small at the region near the central axis,however,the gap near the oral part of workpiece increases enormously.