钛合金薄壁件选区激光熔化应力演变的数值模拟
柯林达1,殷杰2(
),朱海红2,彭刚勇2,孙京丽1,陈昌棚2,王国庆3,李中权1,曾晓雁2
),朱海红2,彭刚勇2,孙京丽1,陈昌棚2,王国庆3,李中权1,曾晓雁2
Numerical Simulation of Stress Evolution of Thin-Wall Titanium Parts Fabricated by Selective Laser Melting
KE Linda1,YIN Jie2(),ZHU Haihong2,PENG Gangyong2,SUN Jingli1,CHEN Changpeng2,WANG Guoqing3,LI Zhongquan1,ZENG Xiaoyan2
),ZHU Haihong2,PENG Gangyong2,SUN Jingli1,CHEN Changpeng2,WANG Guoqing3,LI Zhongquan1,ZENG Xiaoyan2
图8. SLM成形钛合金薄壁件第1层上表面节点D1示意图及不同铺粉层厚度条件下的热应力循环与热循环
Fig.8. Schematic of D1 node at the upper surface of 1st layer of the thin-wall parts (a), and effects of layer thickness on the thermal stress cycle (b) and thermal cycle (c) (σn_max and σn_min represent the maximum stress and the minimum stress in each thermal stress cycle during SLM, respectively; σresidual is the residual stress in the final cooling stage; Tn_max represents the maximum temperature during each thermal cycle; Tannealing is the annealing temperature of Ti-6Al-4V alloy)
