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Study of the structure and mechanical properties of engineering products made of austenitic-martensitic steel, using the metal magnetic memory technique
Welding in the World ( IF 2.1 ) Pub Date : 2020-07-22 , DOI: 10.1007/s40194-020-00968-2
Anatoly Dubov , Alexander Dubov , Artem Marchenkov , Sergey Kolokolnikov

Spontaneous phase transformation in local areas of the austenitic microstructure to martensite with the release of carbides may appear during the manufacturing or operation of engineering products made of two-phase austenitic-martensitic steel grades. When inspecting the quality of products made of these steels, the problem of detecting the local zones of the martensitic phase and carbide precipitation in the product metal arises. The article presents the results of an inspection by means of the metal magnetic memory (MMM) technique of centrifugal compressor impellers made of austenitic-martensitic steel 07Cr16Ni6. It was demonstrated that in the areas of stray field indications detected by means of the MMM technique, strength properties deteriorate, the metal structure degrades with abrupt changing of the metal phase composition and a carbide network formation, unacceptable δ-ferrite, was detected in the structure, and micro- and macro-cracks were found.



中文翻译:

利用金属磁记忆技术研究奥氏体-马氏体钢制成的工程产品的结构和力学性能

在由两相奥氏体-马氏体钢制成的工程产品的制造或操作过程中,可能会在奥氏体微观结构的局部区域自发发生相变,并伴随碳化物的释放。在检查由这些钢制成的产品的质量时,出现了检测产品金属中马氏体相的局部区域和碳化物沉淀的问题。本文介绍了通过奥氏体-马氏体钢07Cr16Ni6制成的离心式压缩机叶轮通过金属磁记忆(MMM)技术进行检查的结果。事实证明,在通过MMM技术检测到的杂散场指示区域中,强度性能下降,

更新日期:2020-07-22
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