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80282

TRIBOLOGICAL BEHAVOUR OF HEAT TREATED HOT WORK STEELS

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Last updated: 25 Dec 2024

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Abstract

ABSTRACT
The aim of the present work is to investigate the friction and wear behavior of commercial hot work tool steels. It is planned to get optimal combination of hardness, friction coefficient and wear by various heat treatment processes and tempering temperatures. Quenching, tempering, martempering and finally austempring treatments were applied to the tested steels. The hardness (HRC) of the steels after heat treatment was determined to evaluate the surface resistance to wear. Scratch test was carried out using a diamond stylus of specified geometry along a straight line path under dry sliding condition. Friction coefficient was calculated to give specific information about surface tribological property. Wear scar width as a measure of wear was measured using optical microscope.
 
It was found that the highest values of hardness and friction coefficient were observed for tested specimens that heat treated at salt bath at 250°C quenched and normalized. Maximum wear was displayed by as received specimens, while the minimum wear was shown by tested specimens that treated in salt bath at 500°C quenched and normalized. The highest value of hardness was observed for the test specimens that tempered at 500°C Tested specimens tempered at 700°C showed higher wear than that observed for tested specimens tempered at 500°C and 600°C. The test specimens quenched by air compressed and tempered have the highest values of hardness (43.2 HRC and 42.5 HRC) respectively.
 

DOI

10.21608/jest.2014.80282

Keywords

Friction, Wear, hardness, scratch test, cold work tool steel, Heat treatment

Authors

First Name

A. H. G.

Last Name

Tawfik

MiddleName

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Affiliation

Faculty of Engineering, Minia University, P. N. 61111, El-Minia, EGYPT.

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City

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Orcid

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First Name

A. A.

Last Name

Ibraheem

MiddleName

-

Affiliation

Faculty of Engineering, Minia University, P. N. 61111, El-Minia, EGYPT.

Email

-

City

-

Orcid

-

First Name

M. I.

Last Name

Khashaba

MiddleName

-

Affiliation

Faculty of Engineering, Minia University, P. N. 61111, El-Minia, EGYPT.

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City

-

Orcid

-

First Name

W. Y.

Last Name

Ali

MiddleName

-

Affiliation

Faculty of Engineering, Taif University, Al –Taif, Saudi Arabia., Faculty of Engineering, Minia University, P. N. 61111, El-Minia, EGYPT,

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-

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Orcid

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Volume

11

Article Issue

1

Related Issue

12047

Issue Date

2014-01-01

Receive Date

2013-08-03

Publish Date

2014-01-01

Page Start

35

Page End

45

Print ISSN

2090-5882

Online ISSN

2090-5955

Article File

JEST_Volume 11_Issue 1_Pages 35-45.pdf

PDF . 814.7kB

Link

https://jest.journals.ekb.eg/article_80282.html

Detail API

https://jest.journals.ekb.eg/service?article_code=80282

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4

Type

Original Article

Type Code

1,211

Publication Type

Journal

Publication Title

Journal of the Egyptian Society of Tribology

Publication Link

https://jest.journals.ekb.eg/

MainTitle

TRIBOLOGICAL BEHAVOUR OF HEAT TREATED HOT WORK STEELS

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Article

Created At

22 Jan 2023