TY - JOUR
T1 - Hall-Petch parameters for tension and compression in cast Mg
AU - Andersson, P.
AU - Cáceres, C. H.
AU - Koike, J.
N1 - Copyright:
Copyright 2020 Elsevier B.V., All rights reserved.
PY - 2003
Y1 - 2003
N2 - The flow stress in tensile and compressive deformation has been determined in cast Mg, for a wide range of grain sizes between 36 μm and 1.5 mm. The grain size was varied by alloying Mg with small amounts of Zr. It was found that the 0.2% offset flow stress, σy, (MPa), varies with the grain size, d (m), as σy = 17.7 + 0.25 d-1/2 in tension, while σy, = -2.3 + 0.39 d-1/2 in compression. Possible reasons for the difference between tension and compression are discussed.
AB - The flow stress in tensile and compressive deformation has been determined in cast Mg, for a wide range of grain sizes between 36 μm and 1.5 mm. The grain size was varied by alloying Mg with small amounts of Zr. It was found that the 0.2% offset flow stress, σy, (MPa), varies with the grain size, d (m), as σy = 17.7 + 0.25 d-1/2 in tension, while σy, = -2.3 + 0.39 d-1/2 in compression. Possible reasons for the difference between tension and compression are discussed.
KW - Grain size
KW - Hall-Petch relationship
KW - Magnesium
KW - Yield stress
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U2 - 10.4028/www.scientific.net/msf.419-422.123
DO - 10.4028/www.scientific.net/msf.419-422.123
M3 - Conference article
AN - SCOPUS:0037246175
VL - 419-422
SP - 123
EP - 128
JO - Materials Science Forum
JF - Materials Science Forum
SN - 0255-5476
IS - I
T2 - Proceedings of the Second Osaka International Conference on Platform Science and Technology for Advanced Magnesium Alloys 2003
Y2 - 26 January 2003 through 30 January 2003
ER -