Precipitation in cold-rolled Al-Sc-Zr and Al-Mn-Sc-Zr alloys prepared by powder metallurgy

Martin Vlach; Ivana Stulíková; Bohumil Smola; Tomáš Kekule; Hana Kudrnová; Stanislav Daniš; Ryota Gemma; Vladivoj Očenášek; Jaroslav Málek; Dhritti Tanprayoon; Volkmar Neubert

doi:10.1016/j.matchar.2013.09.010

Precipitation in cold-rolled Al-Sc-Zr and Al-Mn-Sc-Zr alloys prepared by powder metallurgy

Martin Vlach, Ivana Stulíková, Bohumil Smola, Tomáš Kekule, Hana Kudrnová, Stanislav Daniš, Ryota Gemma, Vladivoj Očenášek, Jaroslav Málek, Dhritti Tanprayoon, Volkmar Neubert

Physical Sciences and Engineering

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Abstract

The effects of cold-rolling on thermal, mechanical and electrical properties, microstructure and recrystallization behaviour of the AlScZr and AlMnScZr alloys prepared by powder metallurgy were studied. The powder was produced by atomising in argon with 1% oxygen and then consolidated by hot extrusion at 350 C. The electrical resistometry and microhardness together with differential scanning calorimetry measurements were compared with microstructure development observed by transmission and scanning electron microscopy, X-ray diffraction and electron backscatter diffraction. Fine (sub)grain structure developed and fine coherent Al3Sc and/or Al3(Sc,Zr) particles precipitated during extrusion at 350 C in the alloys studied. Additional precipitation of the Al3Sc and/or Al3(Sc,Zr) particles and/or their coarsening was slightly facilitated by the previous cold rolling. The presence of Sc,Zr-containing particles has a significant antirecrystallization effect that prevents recrystallization at temperatures minimally up to 420 C. The precipitation of the Al6Mn- and/or Al 6(Mn,Fe) particles of a size ~ 1.0 μm at subgrain boundaries has also an essential antirecrystallization effect and totally suppresses recrystallization during 32 h long annealing at 550 C. The texture development of the alloys seems to be affected by high solid solution strengthening by Mn. The precipitation of the Mn-containing alloy is highly enhanced by a cold rolling. The apparent activation energy of the Al3Sc particles formation and/or coarsening and that of the Al6Mn and/or Al 6(Mn,Fe) particle precipitation in the powder and in the compacted alloys were determined. The cold deformation has no effect on the apparent activation energy values of the Al3Sc-phase and the Al 6Mn-phase precipitation. © 2013 Elsevier Inc.

Original language	English (US)
Pages (from-to)	59-68
Number of pages	10
Journal	Materials Characterization
Volume	86
DOIs	https://doi.org/10.1016/j.matchar.2013.09.010
State	Published - Dec 2013

Bibliographical note

KAUST Repository Item: Exported on 2020-10-01
Acknowledgements: The financial support by The Czech Science Foundation (GACR), post-doc project no. GP P107/11/P201, is gratefully acknowledged. The authors are also grateful to Prof. Jaromir Plagek and Mgr. Tamara Cuckova for their help.

ASJC Scopus subject areas

Mechanics of Materials
General Materials Science
Mechanical Engineering
Condensed Matter Physics

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10.1016/j.matchar.2013.09.010

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@article{aa7972f3989e4e08aa20b199a8f37c35,

title = "Precipitation in cold-rolled Al-Sc-Zr and Al-Mn-Sc-Zr alloys prepared by powder metallurgy",

abstract = "The effects of cold-rolling on thermal, mechanical and electrical properties, microstructure and recrystallization behaviour of the AlScZr and AlMnScZr alloys prepared by powder metallurgy were studied. The powder was produced by atomising in argon with 1% oxygen and then consolidated by hot extrusion at 350 C. The electrical resistometry and microhardness together with differential scanning calorimetry measurements were compared with microstructure development observed by transmission and scanning electron microscopy, X-ray diffraction and electron backscatter diffraction. Fine (sub)grain structure developed and fine coherent Al3Sc and/or Al3(Sc,Zr) particles precipitated during extrusion at 350 C in the alloys studied. Additional precipitation of the Al3Sc and/or Al3(Sc,Zr) particles and/or their coarsening was slightly facilitated by the previous cold rolling. The presence of Sc,Zr-containing particles has a significant antirecrystallization effect that prevents recrystallization at temperatures minimally up to 420 C. The precipitation of the Al6Mn- and/or Al 6(Mn,Fe) particles of a size ~ 1.0 μm at subgrain boundaries has also an essential antirecrystallization effect and totally suppresses recrystallization during 32 h long annealing at 550 C. The texture development of the alloys seems to be affected by high solid solution strengthening by Mn. The precipitation of the Mn-containing alloy is highly enhanced by a cold rolling. The apparent activation energy of the Al3Sc particles formation and/or coarsening and that of the Al6Mn and/or Al 6(Mn,Fe) particle precipitation in the powder and in the compacted alloys were determined. The cold deformation has no effect on the apparent activation energy values of the Al3Sc-phase and the Al 6Mn-phase precipitation. {\textcopyright} 2013 Elsevier Inc.",

author = "Martin Vlach and Ivana Stul{\'i}kov{\'a} and Bohumil Smola and Tom{\'a}{\v s} Kekule and Hana Kudrnov{\'a} and Stanislav Dani{\v s} and Ryota Gemma and Vladivoj O{\v c}en{\'a}{\v s}ek and Jaroslav M{\'a}lek and Dhritti Tanprayoon and Volkmar Neubert",

note = "KAUST Repository Item: Exported on 2020-10-01 Acknowledgements: The financial support by The Czech Science Foundation (GACR), post-doc project no. GP P107/11/P201, is gratefully acknowledged. The authors are also grateful to Prof. Jaromir Plagek and Mgr. Tamara Cuckova for their help.",

year = "2013",

month = dec,

doi = "10.1016/j.matchar.2013.09.010",

language = "English (US)",

volume = "86",

pages = "59--68",

journal = "Materials Characterization",

issn = "1044-5803",

publisher = "Elsevier",

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TY - JOUR

T1 - Precipitation in cold-rolled Al-Sc-Zr and Al-Mn-Sc-Zr alloys prepared by powder metallurgy

AU - Vlach, Martin

AU - Stulíková, Ivana

AU - Smola, Bohumil

AU - Kekule, Tomáš

AU - Kudrnová, Hana

AU - Daniš, Stanislav

AU - Gemma, Ryota

AU - Očenášek, Vladivoj

AU - Málek, Jaroslav

AU - Tanprayoon, Dhritti

AU - Neubert, Volkmar

N1 - KAUST Repository Item: Exported on 2020-10-01 Acknowledgements: The financial support by The Czech Science Foundation (GACR), post-doc project no. GP P107/11/P201, is gratefully acknowledged. The authors are also grateful to Prof. Jaromir Plagek and Mgr. Tamara Cuckova for their help.

PY - 2013/12

Y1 - 2013/12

N2 - The effects of cold-rolling on thermal, mechanical and electrical properties, microstructure and recrystallization behaviour of the AlScZr and AlMnScZr alloys prepared by powder metallurgy were studied. The powder was produced by atomising in argon with 1% oxygen and then consolidated by hot extrusion at 350 C. The electrical resistometry and microhardness together with differential scanning calorimetry measurements were compared with microstructure development observed by transmission and scanning electron microscopy, X-ray diffraction and electron backscatter diffraction. Fine (sub)grain structure developed and fine coherent Al3Sc and/or Al3(Sc,Zr) particles precipitated during extrusion at 350 C in the alloys studied. Additional precipitation of the Al3Sc and/or Al3(Sc,Zr) particles and/or their coarsening was slightly facilitated by the previous cold rolling. The presence of Sc,Zr-containing particles has a significant antirecrystallization effect that prevents recrystallization at temperatures minimally up to 420 C. The precipitation of the Al6Mn- and/or Al 6(Mn,Fe) particles of a size ~ 1.0 μm at subgrain boundaries has also an essential antirecrystallization effect and totally suppresses recrystallization during 32 h long annealing at 550 C. The texture development of the alloys seems to be affected by high solid solution strengthening by Mn. The precipitation of the Mn-containing alloy is highly enhanced by a cold rolling. The apparent activation energy of the Al3Sc particles formation and/or coarsening and that of the Al6Mn and/or Al 6(Mn,Fe) particle precipitation in the powder and in the compacted alloys were determined. The cold deformation has no effect on the apparent activation energy values of the Al3Sc-phase and the Al 6Mn-phase precipitation. © 2013 Elsevier Inc.

AB - The effects of cold-rolling on thermal, mechanical and electrical properties, microstructure and recrystallization behaviour of the AlScZr and AlMnScZr alloys prepared by powder metallurgy were studied. The powder was produced by atomising in argon with 1% oxygen and then consolidated by hot extrusion at 350 C. The electrical resistometry and microhardness together with differential scanning calorimetry measurements were compared with microstructure development observed by transmission and scanning electron microscopy, X-ray diffraction and electron backscatter diffraction. Fine (sub)grain structure developed and fine coherent Al3Sc and/or Al3(Sc,Zr) particles precipitated during extrusion at 350 C in the alloys studied. Additional precipitation of the Al3Sc and/or Al3(Sc,Zr) particles and/or their coarsening was slightly facilitated by the previous cold rolling. The presence of Sc,Zr-containing particles has a significant antirecrystallization effect that prevents recrystallization at temperatures minimally up to 420 C. The precipitation of the Al6Mn- and/or Al 6(Mn,Fe) particles of a size ~ 1.0 μm at subgrain boundaries has also an essential antirecrystallization effect and totally suppresses recrystallization during 32 h long annealing at 550 C. The texture development of the alloys seems to be affected by high solid solution strengthening by Mn. The precipitation of the Mn-containing alloy is highly enhanced by a cold rolling. The apparent activation energy of the Al3Sc particles formation and/or coarsening and that of the Al6Mn and/or Al 6(Mn,Fe) particle precipitation in the powder and in the compacted alloys were determined. The cold deformation has no effect on the apparent activation energy values of the Al3Sc-phase and the Al 6Mn-phase precipitation. © 2013 Elsevier Inc.

UR - http://hdl.handle.net/10754/563123

UR - https://linkinghub.elsevier.com/retrieve/pii/S1044580313002842

UR - http://www.scopus.com/inward/record.url?scp=84886575115&partnerID=8YFLogxK

U2 - 10.1016/j.matchar.2013.09.010

DO - 10.1016/j.matchar.2013.09.010

M3 - Article

SN - 1044-5803

VL - 86

SP - 59

EP - 68

JO - Materials Characterization

JF - Materials Characterization

ER -

Precipitation in cold-rolled Al-Sc-Zr and Al-Mn-Sc-Zr alloys prepared by powder metallurgy

Abstract

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