Impression creep behaviour of TiB2 particles reinforced steel matrix composites

S. Sahoo; B. B. Jha; T.S. Mahata; J. Sharma; T. S. R. Ch Murthy; A. Mandal

doi:10.1080/02670836.2018.1497130

Impression creep behaviour of TiB2 particles reinforced steel matrix composites

S. Sahoo, B. B. Jha, T.S. Mahata, J. Sharma, T. S. R. Ch Murthy, A. Mandal

Metallurgy and Materials

Research output: Contribution to journal › Article › peer-review

3 Citations (Scopus)

Abstract

Impression creep behaviour of the powder metallurgy processed steel matrix composites was investigated under constant stress at different temperatures in the range of 873–973 K. By using the power-law relationship, the estimated activation energy for unreinforced steel was found to be 149 kJ mol−1 and steel reinforced with 2 and 4 vol.-% TiB2 was found to be 298 and 338 kJ mol−1, respectively indicating better creep resistance of the reinforced steel matrix composites. Dislocation creep is the dominant creep mechanism based on the calculated values of stress exponent and activation energy. Hence, this method can be used to assess the potential of steel matrix composites for use as structural materials for high-temperature application.

Original language	English
Pages (from-to)	1965-1975
Journal	Materials Science and Technology
Volume	34
Issue number	16
Early online date	30 Jul 2018
DOIs	https://doi.org/10.1080/02670836.2018.1497130
Publication status	Published - 2 Nov 2018

Keywords

steel matrix composite
titanium diboride
microstructure
x-ray diffraction
impression creep

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title = "Impression creep behaviour of TiB2 particles reinforced steel matrix composites",

abstract = "Impression creep behaviour of the powder metallurgy processed steel matrix composites was investigated under constant stress at different temperatures in the range of 873–973 K. By using the power-law relationship, the estimated activation energy for unreinforced steel was found to be 149 kJ mol−1 and steel reinforced with 2 and 4 vol.-% TiB2 was found to be 298 and 338 kJ mol−1, respectively indicating better creep resistance of the reinforced steel matrix composites. Dislocation creep is the dominant creep mechanism based on the calculated values of stress exponent and activation energy. Hence, this method can be used to assess the potential of steel matrix composites for use as structural materials for high-temperature application.",

keywords = "steel matrix composite, titanium diboride, microstructure, x-ray diffraction, impression creep",

author = "S. Sahoo and Jha, {B. B.} and T.S. Mahata and J. Sharma and Murthy, {T. S. R. Ch} and A. Mandal",

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T1 - Impression creep behaviour of TiB2 particles reinforced steel matrix composites

AU - Sahoo, S.

AU - Jha, B. B.

AU - Mahata, T.S.

AU - Sharma, J.

AU - Murthy, T. S. R. Ch

AU - Mandal, A.

PY - 2018/11/2

Y1 - 2018/11/2

N2 - Impression creep behaviour of the powder metallurgy processed steel matrix composites was investigated under constant stress at different temperatures in the range of 873–973 K. By using the power-law relationship, the estimated activation energy for unreinforced steel was found to be 149 kJ mol−1 and steel reinforced with 2 and 4 vol.-% TiB2 was found to be 298 and 338 kJ mol−1, respectively indicating better creep resistance of the reinforced steel matrix composites. Dislocation creep is the dominant creep mechanism based on the calculated values of stress exponent and activation energy. Hence, this method can be used to assess the potential of steel matrix composites for use as structural materials for high-temperature application.

AB - Impression creep behaviour of the powder metallurgy processed steel matrix composites was investigated under constant stress at different temperatures in the range of 873–973 K. By using the power-law relationship, the estimated activation energy for unreinforced steel was found to be 149 kJ mol−1 and steel reinforced with 2 and 4 vol.-% TiB2 was found to be 298 and 338 kJ mol−1, respectively indicating better creep resistance of the reinforced steel matrix composites. Dislocation creep is the dominant creep mechanism based on the calculated values of stress exponent and activation energy. Hence, this method can be used to assess the potential of steel matrix composites for use as structural materials for high-temperature application.

KW - steel matrix composite

KW - titanium diboride

KW - microstructure

KW - x-ray diffraction

KW - impression creep

U2 - 10.1080/02670836.2018.1497130

DO - 10.1080/02670836.2018.1497130

M3 - Article

SN - 0267-0836

VL - 34

SP - 1965

EP - 1975

JO - Materials Science and Technology

JF - Materials Science and Technology

IS - 16

ER -

Impression creep behaviour of TiB2 particles reinforced steel matrix composites

Abstract

Keywords

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