Effect of intercritical annealing on the microstructural and mechanical behaviours of dual-phase steels
The automotive industry is the main consumer of dual-phase (DP) steels which have relatively impressive mechanical strength. DP steels are also known to have good ductility and load-bearing property because of their hard martensitic microstructure in soft ferrite grains. The main objective of th...
Saved in:
Main Authors: | , , , , |
---|---|
Format: | Article |
Language: | English |
Published: |
Penerbit Universiti Kebangsaan Malaysia
2020
|
Online Access: | http://journalarticle.ukm.my/17200/1/10.pdf http://journalarticle.ukm.my/17200/ https://www.ukm.my/jkukm/volume-324-2020/ |
Tags: |
Add Tag
No Tags, Be the first to tag this record!
|
id |
my-ukm.journal.17200 |
---|---|
record_format |
eprints |
spelling |
my-ukm.journal.172002021-07-27T02:23:52Z http://journalarticle.ukm.my/17200/ Effect of intercritical annealing on the microstructural and mechanical behaviours of dual-phase steels Nora Osman, Zainuddin Sajuri, Intan Fadhlina Mohamed, Mohd Zaidi Omar, Syarif Junaidi, The automotive industry is the main consumer of dual-phase (DP) steels which have relatively impressive mechanical strength. DP steels are also known to have good ductility and load-bearing property because of their hard martensitic microstructure in soft ferrite grains. The main objective of this study is to determine the mechanical behaviour of DP steels with various martensite volume fractions. A heat treatment with an intermediate quenching procedure followed by three different intercritical temperatures is conducted to produce various ferrite–martensite containing DP steels with different martensite volume fractions (Vm ). Vm affects the mechanical properties of steel, such as work hardening, ultimate tensile strength, yield strength and hardness. The results of the experiments conducted in this study prove that excellent work hardening and ductility are observed for DP steels with a low amount of martensite phase. Meanwhile, DP steels with high Vm exhibit high tensile strength and hardness with low ductility. Considère criterion is used to analyse the work hardening behaviour of DP steels. Results indicate that a one-stage work hardening takes place in DP steels; according to Considère criterion, instability strain or uniform elongation is also slightly increased by decreasing the martensite volume fraction or increasing the work hardening rate. Penerbit Universiti Kebangsaan Malaysia 2020 Article PeerReviewed application/pdf en http://journalarticle.ukm.my/17200/1/10.pdf Nora Osman, and Zainuddin Sajuri, and Intan Fadhlina Mohamed, and Mohd Zaidi Omar, and Syarif Junaidi, (2020) Effect of intercritical annealing on the microstructural and mechanical behaviours of dual-phase steels. Jurnal Kejuruteraan, 32 (4). pp. 629-636. ISSN 0128-0198 https://www.ukm.my/jkukm/volume-324-2020/ |
institution |
Universiti Kebangsaan Malaysia |
building |
Tun Sri Lanang Library |
collection |
Institutional Repository |
continent |
Asia |
country |
Malaysia |
content_provider |
Universiti Kebangsaan Malaysia |
content_source |
UKM Journal Article Repository |
url_provider |
http://journalarticle.ukm.my/ |
language |
English |
description |
The automotive industry is the main consumer of dual-phase (DP) steels which have relatively impressive mechanical
strength. DP steels are also known to have good ductility and load-bearing property because of their hard martensitic
microstructure in soft ferrite grains. The main objective of this study is to determine the mechanical behaviour of DP steels
with various martensite volume fractions. A heat treatment with an intermediate quenching procedure followed by three
different intercritical temperatures is conducted to produce various ferrite–martensite containing DP steels with different
martensite volume fractions (Vm
). Vm
affects the mechanical properties of steel, such as work hardening, ultimate tensile
strength, yield strength and hardness. The results of the experiments conducted in this study prove that excellent work
hardening and ductility are observed for DP steels with a low amount of martensite phase. Meanwhile, DP steels with high
Vm
exhibit high tensile strength and hardness with low ductility. Considère criterion is used to analyse the work hardening
behaviour of DP steels. Results indicate that a one-stage work hardening takes place in DP steels; according to Considère
criterion, instability strain or uniform elongation is also slightly increased by decreasing the martensite volume fraction or
increasing the work hardening rate. |
format |
Article |
author |
Nora Osman, Zainuddin Sajuri, Intan Fadhlina Mohamed, Mohd Zaidi Omar, Syarif Junaidi, |
spellingShingle |
Nora Osman, Zainuddin Sajuri, Intan Fadhlina Mohamed, Mohd Zaidi Omar, Syarif Junaidi, Effect of intercritical annealing on the microstructural and mechanical behaviours of dual-phase steels |
author_facet |
Nora Osman, Zainuddin Sajuri, Intan Fadhlina Mohamed, Mohd Zaidi Omar, Syarif Junaidi, |
author_sort |
Nora Osman, |
title |
Effect of intercritical annealing on the microstructural and mechanical behaviours of dual-phase steels |
title_short |
Effect of intercritical annealing on the microstructural and mechanical behaviours of dual-phase steels |
title_full |
Effect of intercritical annealing on the microstructural and mechanical behaviours of dual-phase steels |
title_fullStr |
Effect of intercritical annealing on the microstructural and mechanical behaviours of dual-phase steels |
title_full_unstemmed |
Effect of intercritical annealing on the microstructural and mechanical behaviours of dual-phase steels |
title_sort |
effect of intercritical annealing on the microstructural and mechanical behaviours of dual-phase steels |
publisher |
Penerbit Universiti Kebangsaan Malaysia |
publishDate |
2020 |
url |
http://journalarticle.ukm.my/17200/1/10.pdf http://journalarticle.ukm.my/17200/ https://www.ukm.my/jkukm/volume-324-2020/ |
_version_ |
1706958278179684352 |
score |
13.159267 |