杨洪波,李昊玥,赵贺然,孙蒙,邵明增,亓伟伟

• 1:西安建筑科技大学冶金工程学院
• 2:山东钢铁股份有限公司莱芜分公司技术中心

摘要(Abstract)：

采用周期浸润腐蚀实验机、光学显微镜(OM)、扫描电镜(SEM)和电子背散射衍射(EBSD)技术等研究了晶粒形态对Ti-Mo微合金钢耐蚀性能的影响规律。结果表明：Ti-Mo微合金钢经600～750℃等温热处理后的显微组织为单相铁素体，耐蚀性能受晶粒尺寸、大角度晶界比例、再结晶程度的影响；晶界和变形组织作为阳极，晶粒作为阴极，不均匀的电化学腐蚀使实验钢的腐蚀电流升高，促进了电偶腐蚀的发生，这是影响Ti-Mo微合金钢腐蚀行为的主要机制；在不损害力学性能的前提下，可通过采取适当增大晶粒尺寸、降低大角度晶界比例、提高再结晶程度的措施，提高Ti-Mo钢的耐蚀性能；在本实验条件下，当等温温度为600℃时，Ti-Mo钢的晶粒尺寸为9.66μm、大角度晶界比例为80.3%、平均错配角为1.99°、腐蚀质量损失率为1.98 g/(m~2·h),其耐蚀性能较高。

关键词(KeyWords)： Ti-Mo微合金钢;耐蚀性能;晶粒尺寸;大角度晶界;再结晶程度

Abstract:

Keywords:

基金项目(Foundation): 陕西省自然科学基础研究计划资助项目(2021JM369);; 西安建筑科技大学大学生创新创业训练计划项目(S202310703135)

作者(Author): 杨洪波,李昊玥,赵贺然,孙蒙,邵明增,亓伟伟

DOI: 10.13289/j.issn.1009-6264.2024-0045

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