硫化氢腐蚀对X80管线钢断裂韧性的影响

王晶, 栾春波

Effect of Hydrogen Sulfide Corrosion on Fracture Toughness of X80 Pipeline Steel

WANG Jing, LUAN Chunbo

表2 硫化氢预腐蚀后X80管线钢平面应变断裂韧度K_IC的测试结果

Table 2 Test values of plain strain fracture toughness K_IC of corroded X80 pipeline steel

Sample number	F_max / kN	F_Q / kN	F_max/F_Q	a₀ / mm	B / mm	W-a₀ / mm	g₁	K_Q /MPam^1/2	R_P0.2 /MPa	$\begin{matrix} 2.5 {(\frac{K_{Q}}{R_{P 0.2}})}^{2} \end{matrix}$ / mm	Validity judgment
10#	23.85	15.57	1.53>1.10	15.64	15.01	14.36	2.84	59.93	661.0	20.55	Invalid
13#	24.49	16.31	1.50>1.10	14.53	15.10	15.27	2.54	65.79	661.0	24.77	Invalid
14#	24.93	18.99	1.31>1.10	14.71	15.02	15.29	2.58	75.43	661.0	32.55	Invalid