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80430

TRIBOLOGICAL BEHAVOUR OF HEAT TREATED COLD WORK STEELS

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Last updated: 25 Dec 2024

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Abstract

ABSTRACT
The present experimental work investigates the friction and wear behavior of commercial cold work tool steels. The aim of the work is 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 as received specimens showed the lowest hardness, while the highest value of hardness was observed for specimens quenched in oil and normalized in air. The hardness decreased with increasing tempering temperature. The highest values of friction coefficient were displayed by oil quenching followed by normalizing processes. As received specimens showed relatively higher values of friction coefficient. Oil quenched specimens displayed minimum friction coefficient. Significant reduction in friction coefficient and wear was observed for test specimens cooled by  compressed air and tempered. Maximum wear was displayed by as received specimens, while minimum wear was presented by specimens quenched in oil and normalized in air. Oil quenched specimens displayed relatively low values of wear. Wear decreased for test specimens cooled by compressed air and tempered.

DOI

10.21608/jest.2013.80430

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

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Orcid

-

First Name

W. Y.

Last Name

Ali

MiddleName

-

Affiliation

Faculty of Engineering, Taif University, Al –Taif, Saudi Arabia.

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Orcid

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Volume

10

Article Issue

3

Related Issue

12067

Issue Date

2013-07-01

Receive Date

2013-04-23

Publish Date

2013-07-01

Page Start

51

Page End

62

Print ISSN

2090-5882

Online ISSN

2090-5955

Article File

JEST_Volume 10_Issue 3_Pages 51-62.pdf

PDF . 785.4kB

Link

https://jest.journals.ekb.eg/article_80430.html

Detail API

https://jest.journals.ekb.eg/service?article_code=80430

Order

5

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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 COLD WORK STEELS

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Article

Created At

22 Jan 2023