Fine (Cr,Fe)2B borides on grain boundaries in a 10Cr–0.01B martensitic steel
Artikel i vetenskaplig tidskrift, 2018

A 10Cr creep resistant martensitic steel with 108 ppm B was normalized at 1100 °C for 1 h and air cooled. Fine (Cr,Fe)2B borides were observed on the majority of prior austenite grain boundaries, all of which were high angle boundaries, as revealed by EBSD-based reconstruction of parent austenite grains. Some high angle boundaries including twin boundaries were boride-free. Segregation of boron to austenite grain boundaries during slow cooling from 1100 °C led to boride nucleation and growth. Their size increased with decreasing cooling rate. Borides were verified by atom probe tomography, auger spectroscopy, transmission and scanning electron microscopy.

Boron behavior

Martensitic steels

Atom probe tomography



I. Fedorova

Danmarks Tekniske Universitet (DTU)

Fang Liu

Chalmers, Industri- och materialvetenskap, Material och tillverkning

F. B. Grumsen

Danmarks Tekniske Universitet (DTU)

Yu Cao

Chalmers, Industri- och materialvetenskap, Material och tillverkning

O. V. Mishin

Danmarks Tekniske Universitet (DTU)

John Hald

Danmarks Tekniske Universitet (DTU)

Scripta Materialia

1359-6462 (ISSN)

Vol. 156 124-128




Metallurgi och metalliska material



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