Impact toughness transition temperature of ferritic Fe-Al-V alloy with strengthening Fe2AlV precipitates

P. A. Ferreirós; P. R. Alonso; G. R. Gomez; G. H. Rubiolo

doi:10.1016/j.msea.2017.09.001

Impact toughness transition temperature of ferritic Fe-Al-V alloy with strengthening Fe₂AlV precipitates

P. A. Ferreirós
, P. R. Alonso
, G. R. Gomez
, G. H. Rubiolo^*

^*Corresponding author for this work

Not published at VTT

Universidad Nacional de San Martín
National Technological University
Instituto de Tecnología J. Sabato
Tenaris S.A. (Argentina)
Consejo Nacional de Investigaciones Científicas y Técnicas (CONICET)

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

5 Citations (Scopus)

Abstract

The Fe₂AlV-strengthened ferritic alloys show an appreciable flow stress and creep strength up to 700 °C, comparable to those of other iron aluminide based alloys with coherent microstructures. In the present study, the brittle-to-ductile transition temperature (BDTT) of the Fe₇₆Al₁₂V₁₂ alloy was investigated in the peak hardness condition by Charpy test. A BDTT value of 617 °C was estimated using the criterion of the midpoint of the impact-energy transition region. An attempt is made to gain understanding of the micro-mechanisms controlling the fracture process and their interaction with the microstructure in order to identify ways for enhancing ductility in disordered Fe-Al alloys strengthened by coherent precipitates.

Original language	English
Pages (from-to)	136-141
Journal	Materials Science and Engineering A
Volume	706
DOIs	https://doi.org/10.1016/j.msea.2017.09.001
Publication status	Published - 26 Oct 2017
MoE publication type	A1 Journal article-refereed

Funding

PAF was supported by the CNEA (Argentina) professional fellowship program.

Keywords

Brittle-to-ductile transition
Charpy test
FeAlV
Ferrous alloy
High temperature

Access to Document

10.1016/j.msea.2017.09.001

Cite this

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title = "Impact toughness transition temperature of ferritic Fe-Al-V alloy with strengthening Fe2AlV precipitates",

abstract = "The Fe2AlV-strengthened ferritic alloys show an appreciable flow stress and creep strength up to 700 °C, comparable to those of other iron aluminide based alloys with coherent microstructures. In the present study, the brittle-to-ductile transition temperature (BDTT) of the Fe76Al12V12 alloy was investigated in the peak hardness condition by Charpy test. A BDTT value of 617 °C was estimated using the criterion of the midpoint of the impact-energy transition region. An attempt is made to gain understanding of the micro-mechanisms controlling the fracture process and their interaction with the microstructure in order to identify ways for enhancing ductility in disordered Fe-Al alloys strengthened by coherent precipitates.",

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T1 - Impact toughness transition temperature of ferritic Fe-Al-V alloy with strengthening Fe2AlV precipitates

AU - Ferreirós, P. A.

AU - Alonso, P. R.

AU - Gomez, G. R.

AU - Rubiolo, G. H.

PY - 2017/10/26

Y1 - 2017/10/26

N2 - The Fe2AlV-strengthened ferritic alloys show an appreciable flow stress and creep strength up to 700 °C, comparable to those of other iron aluminide based alloys with coherent microstructures. In the present study, the brittle-to-ductile transition temperature (BDTT) of the Fe76Al12V12 alloy was investigated in the peak hardness condition by Charpy test. A BDTT value of 617 °C was estimated using the criterion of the midpoint of the impact-energy transition region. An attempt is made to gain understanding of the micro-mechanisms controlling the fracture process and their interaction with the microstructure in order to identify ways for enhancing ductility in disordered Fe-Al alloys strengthened by coherent precipitates.

AB - The Fe2AlV-strengthened ferritic alloys show an appreciable flow stress and creep strength up to 700 °C, comparable to those of other iron aluminide based alloys with coherent microstructures. In the present study, the brittle-to-ductile transition temperature (BDTT) of the Fe76Al12V12 alloy was investigated in the peak hardness condition by Charpy test. A BDTT value of 617 °C was estimated using the criterion of the midpoint of the impact-energy transition region. An attempt is made to gain understanding of the micro-mechanisms controlling the fracture process and their interaction with the microstructure in order to identify ways for enhancing ductility in disordered Fe-Al alloys strengthened by coherent precipitates.

KW - Brittle-to-ductile transition

KW - Charpy test

KW - FeAlV

KW - Ferrous alloy

KW - High temperature

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