Prior austenite grains in steels laser surface alloyed with carbon

Journal Article · Fri Feb 28 23:00:00 EST 1997 · Materials Characterization

DOI:https://doi.org/10.1016/S1044-5803(97)00002-8· OSTI ID:532950

Das, D K ^[1]

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1. Defence Metallurgical Research Lab., Hyderabad (India)

Prior austenite grain size is known to affect the hardness of martensite in conventional martensitic hardening of steels. These grains develop in solid state during austenitizing treatment. In the present study, however, it is pointed out that the prior austenite grains that form as a result of solidification in laser surface hardening of steels by alloying with carbon should have similar effects on the resultant martensite in the alloyed layer. A low alloy steel and a commercial pure iron have been laser surface alloyed with carbon to show the solidified austenite grains in the alloyed layer.

• OSTI ID: 532950
• Journal Information: Materials Characterization, Journal Name: Materials Characterization Journal Issue: 3 Vol. 38; ISSN 1044-5803; ISSN MACHEX
• Country of Publication: United States
• Language: English

Related Subjects

36 MATERIALS SCIENCE
AUSTENITE
CARBON
GRAIN SIZE
HARDNESS
IRON
LASERS
LOW ALLOY STEELS
MARTENSITE
MICROSTRUCTURE
SURFACE HARDENING