极地低温下高强钢对接焊缝连接力学性能

曹换, 蔡骜, 谌扬宇, 左文康, 陈满泰

Behavior of High Strength Steel Butt Joints at Arctic Low Temperatures

CAO Huan, CAI Ao, CHEN Yangyu, ZUO Wenkang, CHEN Mantai

表3 常温和低温环境下高强钢对接焊缝拉伸试件力学性能指标

Tab.3 Mechanical properties of high strength steel butt joint tensile specimens at ambient and low temperatures

试件	σ_0.2/MPa	σ_u/MPa	ε_f/%	$\frac{σ_{0.2}}{σ_{0.2, B}}$	$\frac{σ_{u}}{σ_{u, B}}$	$\frac{ε_{f}}{ε_{f, B}}$	$\frac{σ_{0.2}}{σ_{0.2, W}}$	$\frac{σ_{u}}{σ_{u, W}}$	$\frac{ε_{f}}{ε_{f, W}}$	$\frac{σ_{0.2}}{σ_{0.2, a}}$	$\frac{σ_{u}}{σ_{u, a}}$	$\frac{ε_{f}}{ε_{f, a}}$
H8W0T25	653.6	764.6	10.6	1.04	1.09	0.55	0.91	0.97	0.46	1.00	1.00	1.00
H8W0T25R	655.8	765.3	12.4	1.05	1.09	0.64	0.92	0.97	0.54	1.00	1.00	1.00
H8W0T-20	662.2	799.8	16.5	0.97	1.00	0.67	0.91	0.94	0.69	1.01	1.05	1.43
H8W0T-40	661.8	815.2	18.1	1.02	1.09	0.76	0.90	0.95	0.70	1.01	1.07	1.57
H8W0T-60	664.9	836.7	19.3	1.00	1.06	0.80	0.90	0.96	0.69	1.02	1.09	1.68
H8W0T-75	678.8	861.9	16.9	0.93	1.00	0.66	0.91	0.96	0.70	1.04	1.13	1.47
H8W2T25	708.0	788.0	21.1	1.13	1.12	1.09	0.86	0.82	1.20	1.00	1.00	1.00
H8W2T25R	704.2	786.5	19.8	1.12	1.12	1.02	0.86	0.81	1.13	1.00	1.00	1.00
H8W2T-20	699.9	775.1	17.9	1.02	0.97	0.72	0.84	0.77	0.97	0.99	0.98	0.88
H8W2T-40	706.6	801.8	21.2	1.09	1.08	0.89	0.85	0.77	1.18	1.00	1.02	1.04
H8W2T-60	726.3	858.8	21.0	1.10	1.09	0.87	0.84	0.81	1.15	1.03	1.09	1.03
H8W2T-75	741.5	873.0	22.4	1.02	1.01	0.88	0.86	0.81	1.24	1.05	1.11	1.10