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Cause Analysis and Corrective Measures of Disqualified Impact Toughness of 09MnNiDR Steel Plate for Low Temperature Pressure Vessel
Author(s): 
Pages: 27-30
Year: Issue:  2
Journal: Wide and Heavy Plate

Keyword:  09MnNiDR低温韧性组织分析;
Abstract: 针对舞钢09MnNiDR钢板板厚1/2处冲击韧性不合的情况,对不合试样进行了金相组织、扫描电镜断口和能谱分析,发现冲击韧性不合的主要原因是板厚1/2处存在大颗粒夹杂或严重偏析,且偏析处为贝氏体硬相组织.提出了冶炼、控轧、热处理工艺方面的改进措施,提高了钢板的低温冲击韧性,取得了良好效果.
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