Distribution of Mo at grain boundary of 1300MPa CrMo Steel

机译：1300MPa CrMo钢晶界Mo的分布

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摘要

TEM, EDS and STEM were used to investigate distribution of Mo element in new CrMo steel ADF1 which is applied to 1300MPa high strength bolts with superior delayed fracture resistance. Research results reveal that Mo easily concentrates at grain boundaries. According to refined EDS point and mapping analysis, the region of Mo segregation at grain boundary is about several nanometers wide, and distribution of Mo along the grain boundary is not uniform. The average content of Mo at grain boundary is about double of that in grain area. Concentration of Mo can increase the bonding force of grain boundary, and this is of advantage to the improvement of strength and delayed fracture resistance of the new CrMo steel.

机译：TEM，EDS和STEM用于研究新型CrMo钢ADF1中的Mo元素分布，该材料用于1300MPa高强度螺栓，具有出色的抗延迟断裂性能。研究结果表明，Mo容易集中在晶界。根据改进的EDS点和映射分析，Mo在晶界处的偏析区域约为几纳米宽，并且Mo沿晶界的分布不均匀。 Mo在晶界的平均含量约为晶粒面积的两倍。 Mo的浓度可以增加晶界的结合力，这对于提高新型CrMo钢的强度和延缓其抗断裂性是有利的。

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来源
《Pacific Rim International Conference on Advanced Materials and Processing(PRICM 5) pt.1; 20041102-05; Beijing(CN)》|2004年|P.109-112|共4页
会议地点 Beijing(CN)
作者
W.G. Yang; L.N. Zhang; X. Zhang; W.J. Hui;
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作者单位

Electron Microscopy Laboratory, School of Materials Science and Engineering, Tsinghua University, Beijing 100084, P.R. China;

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会议组织
原文格式 PDF
正文语种 eng
中图分类工程材料一般性问题;
关键词
Cr-Mo steel; Mo element; Grain boundary; TEM;

机译：Cr-Mo钢； Mo元素；晶界； TEM;

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Distribution of Mo at grain boundary of 1300MPa CrMo Steel

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