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桥梁钢Q370qE焊缝断裂韧性CTOD试验研究 被引量:2

CTOD Fracture Toughness Test for Weld Seam of Q370qE of Bridge
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摘要 依据英国标准BS7448断裂韧度试验标准和DNV-OS-C401,对桥梁用钢Q370qE进行了CTOD(裂纹尖端张开位移)试验,分别测试了在低温(-20℃)和常温(20℃)条件下不同厚度的母材、热影响区、焊缝的CTOD断裂韧度,实验结果表明,在同种物理条件下,焊缝的韧性比母材和热影响区试件差。 Based on BS7448 fracture toughness test experiment standard and DNV-OS-C401,three-point crack tip open displacement(CTOD) bending tests were made using Q370qE base steel,weld seam and heat-affected zone(HAZ) samples at different sample thickness and at low temperature(-20 ℃) and room temperature(20 ℃) to research the elasto-plastic fracture toughness of the materials frequently used in bridge construction.The results show that the fracture toughness of weld seam is worse than the base steel and HAZ.
出处 《武汉理工大学学报》 CAS CSCD 北大核心 2009年第24期67-69,73,共4页 Journal of Wuhan University of Technology
关键词 Q370QE 裂纹尖端张开位移(CTOD) 断裂韧性 弹塑性 低温试验 Q370qE crack tip open displacement(CTOD) fracture toughness elasto-plasticity experience at low temperature
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