Effect of Single and Double Austenitization treatments on the Microstructure and Hardness of AISI D2 Tool Steel

被引：22

作者：

Salunkhe, S. ^{[1
]}

Fabijanic, D. ^{[2
]}

Nayak, J. ^{[3
]}

Hodgson, P. ^{[2
]}

机构：

[1] Gokaraju Rangaraju Inst Engn & Technol, Dept Mech Engn, Hyderabad, Telangana, India

[2] Deakin Univ, Inst Frontier Mat, Waurn Ponds, Vic, Australia

[3] Natl Inst Technol Karnataka, Dept Met & Mat Engn, Mangalore, Karnataka, India

来源：

MATERIALS TODAY-PROCEEDINGS | 2015年 / 2卷 / 4-5期

关键词：

AISI D2; double austenitization; Prior austenite grain size; MECHANICAL-PROPERTIES; HEAT-TREATMENT; TOUGHNESS;

D O I：

10.1016/j.matpr.2015.07.145

中图分类号：

T [工业技术];

学科分类号：

08 ;

摘要：

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 D2 type 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 (similar to 850-1100 degrees 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 is to 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. (C) 2015 Elsevier Ltd. All rights reserved.

引用

页码：1901 / 1906

页数：6

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