【摘要】 采用铸坯低倍、原位分析、扫描电镜和统计等方法,对高强船板降锰前后的低倍、锰元素偏析和拉伸断口合格率进行了研究。通过降锰,高强船板的铸坯低倍和锰元素偏析明显好于降锰前的情况,同时拉伸断口没有以前的分层现象、合格率显著提高。更多还原

【Abstract】 Through low power examination,original position analysis(OPA),scanning electron microscopy and statistics,the paper researched the low power examination,Mn segregation,quality ratio of tension fracture before and after Mn reduction for high strength plates.Through Mn reduction,low power examination and Mn segregation were better obviously than that before Mn reduction,layers disappeared in tension fracture and quality ratio improved obviously.更多还原