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微观取向对X80管线钢动态冲击性能的影响

Jinshu Rechuli/Heat Treatment of Metals(2012)

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Abstract
利用环境扫描电子显微镜及电子背散射衍射(EBSD)技术分析了X80管线钢的组织与微观取向的特点。探讨了取向对强韧性的影响。结果表明,针状铁素体和弥散析出的M/A岛组织对管线钢的动态冲击性能有利;小角度结晶比率越高、晶粒越细小,越有效地阻碍位错移动,使钢的抗裂性能提高;{112}〈110〉、{110}〈110〉织构是影响管线钢落锤撕裂(DWTT)性能的有利取向。
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Key words
Electron backscatter diffraction (EBSD),Impact properties,Micro-orientation,Texture,X80 pipeline steel
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