发动机曲轴A_k值下降原因的俄歇分析  

Auger Analysis of A_K Reduction cause of Engine crankshaft

作　　者：唐文泰 赵彤 

机构地区：[1]兵器工业第五二研究所,包头市014034

出　　处：《物理测试》1998年第2期36-38,共3页Physics Examination and Testing

摘　　要：经使用扫描俄歇探针对A_K值不符合要求的曲轴进行了断口检验分析,发现断口上沿晶断裂的脆性区域中磷含量显著高于穿晶断裂的韧性区。有的样品中,晶界面上和晶内的磷含量相差二十多倍。因而分析认为,磷元素在晶界面的大量偏聚是引起曲轴A_K值下降的主要原因。The fracture of engine crankshaft was analyzed by auger probe experiment. The results show that the phosphorus content at the intercrystalline is notably higher than that the in transgranutar ductile zone. In some speamens the phosphorus content at the intercrystalline differs from that in intracrystalline by 20 times. Thus, the phosphorus segregation at the intercrystalline is the primany cause of reducing An of cramkshaft.

关 键 词：曲轴 俄歇分析 磷 晶界偏聚 发动机 Ak值 

分 类 号：TK403[动力工程及工程热物理—动力机械及工程] TG142.15[一般工业技术—材料科学与工程]