文章基本信息

标题：The microhardness and internal stresses allocation in superheating pipes welded node made of dissimilar steels
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作者：Aigul Ilyasova ; Aigul Ilyasova ; Roman Kulesh 等
期刊名称：MATEC Web of Conferences
电子版ISSN：2261-236X
出版年度：2017
卷号：110
页码：1-7
DOI：10.1051/matecconf/201711001047
语种：English
出版社：EDP Sciences
摘要：The object of research is the welded knot made of dissimilar steels 12Cr1MoV and Di-59. Research methods are spectral analysis, microhardness measurements and X-ray analysis. It is established that the structural-phase nonuniformity, significant concentration fluctuations of alloying elements, the spread in values of microhardness and mechanical characteristics along the length of the pipe can cause significant value of internal macrostress that leads to the formation of the “flaw” defect type in the welding process. It is shown how to distinguish between flaws that have appeared on the stage of production from operating flaws.