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Nanostructured tool steel fabricated by combination of laser melting and friction stir processing

机译:激光熔化与搅拌摩擦加工相结合的纳米结构工具钢

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摘要

The microstructural control of tool steel (SKD11) by laser melting and friction stir processing (FSP) was studied. A nanometer-sized microstructure consisting of fine M7C3 carbide (particle size: ~100 nm) and a matrix (grain size: ~200nm) was successfully fabricated by the FSP on the laser treated SKD11. The nanostructured SKD11 had an extremely high hardness of about 900 HV even with its relatively high amount of retained austenite.
机译:研究了通过激光熔化和搅拌摩擦加工(FSP)进行的工具钢(SKD11)的组织控制。 FSP在激光处理过的SKD11上成功地制备了由M7C3精细碳化物(粒度:〜100 nm)和基质(粒度:〜200nm)组成的纳米级微观结构。纳米结构的SKD11即使具有相对大量的残余奥氏体,也具有约900 HV的极高硬度。

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