The interaction of precipitation and deformation in a binary Mg-Ca alloy at elevated temperatures

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The interaction of precipitation and deformation in a binary Mg-Ca alloy at elevated temperatures. / Lalpoor, M.; Miroux, A.; Mendis, C. L. et al.
In: Materials Science and Engineering A, Vol. 609, 15.07.2014, p. 116-124.

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Lalpoor M, Miroux A, Mendis CL, Hort N, Offerman SE. The interaction of precipitation and deformation in a binary Mg-Ca alloy at elevated temperatures. Materials Science and Engineering A. 2014 Jul 15;609:116-124. doi: 10.1016/j.msea.2014.04.095

Bibtex

@article{478667c0d2f045078ed3431944e2010d,
title = "The interaction of precipitation and deformation in a binary Mg-Ca alloy at elevated temperatures",
abstract = "The effect of pre-deformation on precipitation hardening response as well as the work-hardening behavior of a binary Mg-Ca alloy are investigated. Our results show that application of 5% pre-deformation increases the precipitation hardening response of the material and decreases the annealing time by 50%. The dislocations introduced during the pre-deformation process act as predominant nucleation sites and result in a higher number of precipitates of smaller size. During the thermomechanical treatments, the work hardening behavior is altered by the state of the precipitates, namely, under-aged, peak-aged and over-aged. After the elastic-plastic transition, under-aged and peak-aged materials show a continuously decreasing work-hardening rate, while the over-aged material has an initial constant work-hardening rate. The absolute values of the work hardening rate are far less sensitive to the precipitation stage compared to aluminum alloys; a fact that explains the low work hardening capacity of magnesium compared to aluminum.",
keywords = "Materials scarcity, Mg-Ca alloys, Precipitation, Thermomechanical treatment, Work hardening, Engineering",
author = "M. Lalpoor and A. Miroux and Mendis, {C. L.} and N. Hort and Offerman, {S. E.}",
year = "2014",
month = jul,
day = "15",
doi = "10.1016/j.msea.2014.04.095",
language = "English",
volume = "609",
pages = "116--124",
journal = "Materials Science and Engineering A",
issn = "0921-5093",
publisher = "Elsevier B.V.",

}

RIS

TY - JOUR

T1 - The interaction of precipitation and deformation in a binary Mg-Ca alloy at elevated temperatures

AU - Lalpoor, M.

AU - Miroux, A.

AU - Mendis, C. L.

AU - Hort, N.

AU - Offerman, S. E.

PY - 2014/7/15

Y1 - 2014/7/15

N2 - The effect of pre-deformation on precipitation hardening response as well as the work-hardening behavior of a binary Mg-Ca alloy are investigated. Our results show that application of 5% pre-deformation increases the precipitation hardening response of the material and decreases the annealing time by 50%. The dislocations introduced during the pre-deformation process act as predominant nucleation sites and result in a higher number of precipitates of smaller size. During the thermomechanical treatments, the work hardening behavior is altered by the state of the precipitates, namely, under-aged, peak-aged and over-aged. After the elastic-plastic transition, under-aged and peak-aged materials show a continuously decreasing work-hardening rate, while the over-aged material has an initial constant work-hardening rate. The absolute values of the work hardening rate are far less sensitive to the precipitation stage compared to aluminum alloys; a fact that explains the low work hardening capacity of magnesium compared to aluminum.

AB - The effect of pre-deformation on precipitation hardening response as well as the work-hardening behavior of a binary Mg-Ca alloy are investigated. Our results show that application of 5% pre-deformation increases the precipitation hardening response of the material and decreases the annealing time by 50%. The dislocations introduced during the pre-deformation process act as predominant nucleation sites and result in a higher number of precipitates of smaller size. During the thermomechanical treatments, the work hardening behavior is altered by the state of the precipitates, namely, under-aged, peak-aged and over-aged. After the elastic-plastic transition, under-aged and peak-aged materials show a continuously decreasing work-hardening rate, while the over-aged material has an initial constant work-hardening rate. The absolute values of the work hardening rate are far less sensitive to the precipitation stage compared to aluminum alloys; a fact that explains the low work hardening capacity of magnesium compared to aluminum.

KW - Materials scarcity

KW - Mg-Ca alloys

KW - Precipitation

KW - Thermomechanical treatment

KW - Work hardening

KW - Engineering

UR - http://www.scopus.com/inward/record.url?scp=84900819472&partnerID=8YFLogxK

U2 - 10.1016/j.msea.2014.04.095

DO - 10.1016/j.msea.2014.04.095

M3 - Journal articles

AN - SCOPUS:84900819472

VL - 609

SP - 116

EP - 124

JO - Materials Science and Engineering A

JF - Materials Science and Engineering A

SN - 0921-5093

ER -