TY - JOUR
T1 - Monkman-grant analysis of creep fracture in dispersion-strengthened and particulate-reinforced aluminum
AU - Dunand, D. C.
AU - Han, B. Q.
AU - Jansen, A. M.
PY - 1999/3
Y1 - 1999/3
N2 - The tensile creep fracture properties of coarse-and fine-grained dispersion-strengthened-cast aluminum (DSC-Al) with 25 vol pct of submicron alumina dispersoids are presented for temperatures between 335 °C and 500 °C and stresses between 30 and 100 MPa. The primary, secondary, and tertiary creep strains are analyzed in terms of the minimum creep rate, applied stress, and temperature. Good agreement with the original and the modified Monkman-Grant relationships is found for the failure time of DSC-Al and other aluminum materials reinforced with dispersoids or particulates. The origin of the Monkman-Grant relationships for these materials is discussed in terms of stress exponents, specific interfacial areas, and ratio of secondary strain to failure strain.
AB - The tensile creep fracture properties of coarse-and fine-grained dispersion-strengthened-cast aluminum (DSC-Al) with 25 vol pct of submicron alumina dispersoids are presented for temperatures between 335 °C and 500 °C and stresses between 30 and 100 MPa. The primary, secondary, and tertiary creep strains are analyzed in terms of the minimum creep rate, applied stress, and temperature. Good agreement with the original and the modified Monkman-Grant relationships is found for the failure time of DSC-Al and other aluminum materials reinforced with dispersoids or particulates. The origin of the Monkman-Grant relationships for these materials is discussed in terms of stress exponents, specific interfacial areas, and ratio of secondary strain to failure strain.
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U2 - 10.1007/s11661-999-1016-6
DO - 10.1007/s11661-999-1016-6
M3 - Article
AN - SCOPUS:0033100450
SN - 1073-5623
VL - 30
SP - 829
EP - 838
JO - Metallurgical and Materials Transactions A: Physical Metallurgy and Materials Science
JF - Metallurgical and Materials Transactions A: Physical Metallurgy and Materials Science
IS - 13
ER -