A Case Study of Heat Treatment on AISI 1020 Steel

Sayed Shafayat Hossain; Md. Maksudul Islam

A Case Study of Heat Treatment on AISI 1020 Steel

Sayed Shafayat Hossain * §

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Md. Maksudul Islam

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maksudkhandakar

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§ Khulna University of Engineering and Technology

A Case Study of Heat Treatment on AISI 1020 Steel

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Abstract

Proper heat treatment of steels is one of the most important factors in determining how they will perform in service. Engineering materials, mostly steel, are heat treated under controlled sequence of heating and cooling to alter their physical and mechanical properties to meet desired engineering applications. In this study we have chosen AISI 1020 steel as for our research work and we have tried to find out the mechanical properties (hardness) and micro structural properties (martensite formation, carbon self-locking region) by means of appropriate heat treatment process (annealing, normalizing & hardening). Here the steel specimens were heat treated in a furnace at different temperature levels and soaking time; and then cooled in various media (air, ash, water). After that the hardness of the specimens were rechecked for the comparison with previous data and the microstructures of the specimens were examined using metallurgical microscope equipped with camera. These results showed that the hardness of AISI 1020 steel can be changed and improved by different heat treatments for a particular application. From the microstructures we have found that the annealed specimens with mainly ferrite structure give the lowest hardness value and highest ductility while hardened specimens which comprise martensite give the highest hardness value and lowest ductility. On the other hand, normalized specimens have given the moderate hardness and ductility comparing with hardened and annealed specimens.

References

7 Cites in Article

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Funding

No external funding was declared for this work.

Conflict of Interest

The authors declare no conflict of interest.

Ethical Approval

No ethics committee approval was required for this article type.

Data Availability

Not applicable for this article.

How to Cite This Article

Sayed Shafayat Hossain, Md. Maksudul Islam, maksudkhandakar. 2014. "A Case Study of Heat Treatment on AISI 1020 Steel". Global Journal of Research in Engineering - A : Mechanical & Mechanics GJRE-A Volume 14 (GJRE Volume 14 Issue A5).

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GJRE Volume 14 Issue A5

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Journal Specifications

Crossref Journal DOI 10.17406/gjre

Print ISSN 0975-5861

e-ISSN 2249-4596

Keywords

annealing austenite ferrite hardening heat treatment martensite microstructures normalizing pearlite

Classification

GJRE-A Classification FOR Code: 091399

091308

Submission ReceivedDecember 11, 2013
Peer Review Double Blind
Handling Editor
Accepted January 1, 2014
Published January 15, 2014

Version of record

v1.2

Issue date

July 12, 2014

Language

English

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Article Matrices

Total Score: 103

Country: Bangladesh

Subject: Global Journal of Research in Engineering

Authors: Sayed Shafayat Hossain, Md. Maksudul Islam, Md. Sajibul Alam Bhuyan (PhD/Dr. count: 0)

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