梁应广，曹建刚，王晓东，迟永超
（内蒙古科技大学 材料与冶金学院，内蒙古 包头 014010）
关键词：P91；厚壁管；镦粗穿孔；孔洞；数值模拟
中图分类号：TG376.9 文献标识码：A
摘 要：本文借助大型有限元软件Deform模拟分析P91厚壁管在穿孔过程中的孔洞演变规律，重点分析了孔洞在镦粗穿孔过程的温度场、等效应力、等效应变等方面的变化情况，促进工艺制定由经验走向科学。
Simulation of void evolution in piercing process of P91 thick-walled pipe
LIANG Ying-guang，CAO Jian-gang，WANG Xiao-dong，CHI Yong-chao
( Materials and Metallurgy School，Inner Mongolia University of Science and Technology，Baotou 014010，China)
Key Words：P91；thick-walled pipe；upsetting and piercing；void；Numerical simulation
Abstract：A simulation analysis of the void evolution of the P91 thick-walled pipe in perforation process wascarried out based on large finite element software Deform .The temperature field, effective stress, effective strain and other changes of void in the upsetting and piercing process were emphatically analyzed, which will help promote the experience-based technology to develop into scientifictechnology making.