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Effect of single and double austenitization treatments on the microstructure and hardness of AISI D2 tool steel

conference contribution
posted on 2015-01-01, 00:00 authored by S Salunkhe, Daniel FabijanicDaniel Fabijanic, J Nayak, Peter HodgsonPeter Hodgson
This investigation is concerned with the study of effect of Double Austenitization (DA) and Single Austenitization (SA) heat treatment processes on microstructure and mechanical property of AISI D2type cold worked tool steel. To maximize hardness, tool steels are used in a quenched and tempered condition. This involves heating the material to the austenitizing temperature (~850-1100. °C), quenching at an appropriate rate to form martensite, and tempering to reduce the retained austenite content and induce toughness. The merits of DA treatment isto promote dissolution of carbides at the same time proscribe grain coarsening significantly was attempted in D2 tool steel. The study has found that DA treatment has induced high hardness with insignificant growth in grains. The increase in hardness is attributed to increase in carbon content in matrix due to dissolution of carbides; whereas finer grains due to role of inclusions.

History

Volume

2

Pagination

1901-1906

Location

Hyderabad, India

Start date

2015-03-14

End date

2015-03-15

eISSN

2214-7853

Language

eng

Publication classification

E Conference publication, E1 Full written paper - refereed

Copyright notice

2015, Elsevier

Title of proceedings

ICMPC 2015: Proceedings of 4th International Conference on Materials Processing and Characterzation

Event

Materials Processing and Characterzation. Conference (4th: 2015: Hyderabad, India)

Issue

4-5

Publisher

Elsevier

Place of publication

Amsterdam, The Netherlands