TY - JOUR
T1 - Fatigue strength characteristics of non-combustible Mg alloy (2nd report, effect of mean stress on fatigue strength)
AU - Morishige, Kazunori
AU - Maeda, Yuna
AU - Hamada, Shigeru
AU - Noguchi, Hiroshi
PY - 2008/1
Y1 - 2008/1
N2 - Rotating bending tests and tension-compression fatigue tests on non-combustible magnesium alloy were carried out to investigate effect of mean stress on fatigue strength at N=107 The ignition point of non-combustible magnesium alloys is about 300 K higher than that of normal magnesium alloys because of calcium addition. It was clarified as follows. (1) In the range of σm MPa, fatigue strength at N=107 of small hole specimens was about 30-150% higher than that of small crack specimens. (2) In the range of σm>100MPa, fatigue strength at N=107 of small hole specimens decreased because of static cracks initiating around small hole at the first loading. (3) In the range of σmax<σ0.2, fatigue strength at N=10 7 of smooth specimens was estimated using modified Goodman diagram.
AB - Rotating bending tests and tension-compression fatigue tests on non-combustible magnesium alloy were carried out to investigate effect of mean stress on fatigue strength at N=107 The ignition point of non-combustible magnesium alloys is about 300 K higher than that of normal magnesium alloys because of calcium addition. It was clarified as follows. (1) In the range of σm MPa, fatigue strength at N=107 of small hole specimens was about 30-150% higher than that of small crack specimens. (2) In the range of σm>100MPa, fatigue strength at N=107 of small hole specimens decreased because of static cracks initiating around small hole at the first loading. (3) In the range of σmax<σ0.2, fatigue strength at N=10 7 of smooth specimens was estimated using modified Goodman diagram.
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U2 - 10.1299/kikaia.74.115
DO - 10.1299/kikaia.74.115
M3 - Article
AN - SCOPUS:42049086166
SN - 0387-5008
VL - 74
SP - 115
EP - 121
JO - Nihon Kikai Gakkai Ronbunshu, A Hen/Transactions of the Japan Society of Mechanical Engineers, Part A
JF - Nihon Kikai Gakkai Ronbunshu, A Hen/Transactions of the Japan Society of Mechanical Engineers, Part A
IS - 1
ER -