The influence of BN additives on the phase composition, microstructure and mechanical properties of 316L steel consolidated by spark plasma sintering

P. Jenei, Cs Balázsi, Horváth, K. Balázsi, J. Gubicza

Research output: Contribution to journalConference article

1 Citation (Scopus)

Abstract

Blends of commercial 316L steel and boron nitride (BN) were consolidated using Spark Plasma Sintering (SPS). The components were mixed by high energy milling (using attritor) before sintering. The aim was to study the effect of BN on the microstructure and the mechanical properties. Two composites containing 0.5 and 2 wt.% BN were produced beside a pure 316L specimen. It was found that bimodal grain size distribution formed during the production. A bcc α'-phase formed during milling beside the main fcc γ-phase. The addition of BN resulted in a slightly higher dislocation density and a smaller grain size in the fine grained parts of the samples. At the same time, the elastic modulus and the strength determined by bending test were reduced, most probably due to the weak bonding between the 316L and the BN grains, and the lower fraction of α'-phase.

Original languageEnglish
Article number012020
JournalIOP Conference Series: Materials Science and Engineering
Volume426
Issue number1
DOIs
Publication statusPublished - Oct 18 2018
Event11th Hungarian Conference on Materials Science, 2017 - Balatonkenese, Hungary
Duration: Oct 15 2017Oct 17 2017

Fingerprint

Spark plasma sintering
Boron nitride
Steel
Phase composition
Mechanical properties
Microstructure
Mechanical alloying
Bending tests
Sintering
Elastic moduli
boron nitride
Composite materials

ASJC Scopus subject areas

  • Materials Science(all)
  • Engineering(all)

Cite this

The influence of BN additives on the phase composition, microstructure and mechanical properties of 316L steel consolidated by spark plasma sintering. / Jenei, P.; Balázsi, Cs; Horváth; Balázsi, K.; Gubicza, J.

In: IOP Conference Series: Materials Science and Engineering, Vol. 426, No. 1, 012020, 18.10.2018.

Research output: Contribution to journalConference article

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abstract = "Blends of commercial 316L steel and boron nitride (BN) were consolidated using Spark Plasma Sintering (SPS). The components were mixed by high energy milling (using attritor) before sintering. The aim was to study the effect of BN on the microstructure and the mechanical properties. Two composites containing 0.5 and 2 wt.{\%} BN were produced beside a pure 316L specimen. It was found that bimodal grain size distribution formed during the production. A bcc α'-phase formed during milling beside the main fcc γ-phase. The addition of BN resulted in a slightly higher dislocation density and a smaller grain size in the fine grained parts of the samples. At the same time, the elastic modulus and the strength determined by bending test were reduced, most probably due to the weak bonding between the 316L and the BN grains, and the lower fraction of α'-phase.",
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AU - Gubicza, J.

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AB - Blends of commercial 316L steel and boron nitride (BN) were consolidated using Spark Plasma Sintering (SPS). The components were mixed by high energy milling (using attritor) before sintering. The aim was to study the effect of BN on the microstructure and the mechanical properties. Two composites containing 0.5 and 2 wt.% BN were produced beside a pure 316L specimen. It was found that bimodal grain size distribution formed during the production. A bcc α'-phase formed during milling beside the main fcc γ-phase. The addition of BN resulted in a slightly higher dislocation density and a smaller grain size in the fine grained parts of the samples. At the same time, the elastic modulus and the strength determined by bending test were reduced, most probably due to the weak bonding between the 316L and the BN grains, and the lower fraction of α'-phase.

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