喷丸表面粗糙度对纯<strong>Ti</strong>焊接接头在<strong>HCl</strong>溶液中应力腐蚀开裂行为的影响

喷丸表面粗糙度对纯Ti焊接接头在HCl溶液中应力腐蚀开裂行为的影响

张聪惠,荣花,宋国栋,胡坤

Effect of Surface Roughness by Shot Peening on Stress Corrosion Cracking Behavior of Pure Titanium Welded Joints in HCl Solution

Conghui ZHANG,Hua RONG,Guodong SONG,Kun HU

表2 不同工艺处理纯Ti焊接接头SSRT实验结果及应力腐蚀开裂敏感性指数(I_SCC)

Table 2 The SSRT result and I_SCCof CP-Ti welded joint at different processes

Treatment	Environment	σ_b / MPa	δ / %	ψ / %	W / (J·m^-3)	I_SCC / %
Original	Air	457.90	30.76	46.62	119.46	-
Original	HCl	394.96	28.66	39.78	88.87	25.61
USSP	HCl	412.49	28.74	40.93	97.67	18.24
USSP+600#	HCl	412.48	29.49	42.79	100.77	15.64
USSP+1500#	HCl	402.53	31.30	43.74	105.17	11.96