The microstructure of the weld zone is tempered martensite zone.

热影响区的显微组织主要为回火马氏体;熔合线结合良好,组织均匀.

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Overheating can result in tempered martensite ( OTM ) or untempered martensite ( UTM ) formations in the base metal.

过热会造成在本体金属中形成过回火马氏体 ( OTM ) 或者欠回火马氏体 ( UTM ) .

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The effect of phosphorus on tempered martensite embrittlement ( TME ) has been studied in medium - carbon Si - Mn steel.

本文就杂质元素磷对中碳硅 — 锰钢回火马氏体脆性 ( TME ) 的影响作了研究,试验结果表明:钢中TME的存在并不决定于磷含量的多少,因为低磷钢或高磷钢中均可观察到TME现象.

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