热输入对<strong>Q500qE</strong>钢模拟<strong>CGHAZ</strong>微观组织和冲击韧性的影响

热输入对Q500qE钢模拟CGHAZ微观组织和冲击韧性的影响

朱东明, 何江里, 史根豪, 王青峰

Effect of Welding Heat Input on Microstructure and Impact Toughness of the Simulated CGHAZ in Q500qE Steel

ZHU Dongming, HE Jiangli, SHI Genhao, WANG Qingfeng

表1 不同热输入下CGHAZ的微结构尺寸测量结果和解理面尺寸统计

Table 1 Size measurement results of microstructure and statistics of cleavage face size of CGHAZs with different heat inputs

E_j / (kJ·cm^-1)	Microstructure	D_γ / μm	D_P / μm	W_B / μm	D_f / μm
15	92%LB + 8%GB	41.2 ± 4	18.9 ± 2	4.0 ± 0.5	15 ± 2
20	84%LB + 16%GB	68.7 ± 5	48.2 ± 5	4.5 ± 0.5	28 ± 2
25	78%LB + 22%GB	81.7 ± 8	64.3 ± 6	5.2 ± 0.6	32 ± 3
30	71%LB + 29%GB	99.3 ± 9	78.8 ± 8	5.6 ± 0.7	37 ± 3