This paper studies the effect of specimen diameter on creep and creep rupture time for Sn-37Pb and Sn-3.5Ag solders. Creep tests using miniature specimens with gage diameters ranging from 7.5 and 0.3 mm were carried out at 313 K and the effect of specimen diameter was discussed. The scatter of the creep rupture time was increased with decreasing the specimen diameter. The rupture ductility was decreased by the reduction of the diameter but the reduction of area did not decreased. This indicates that the reduction of area at local parts caused the larger scatter of rupture time for the miniature specimens.
1.
Takada
A.
Sakane
M.
Yutaka
Y.
Hideo
H.
Transactions of the Japan Society of Mechanical Engineers
, Vol. 66
, No. 643
, pp. 589
–594
, 2000
.2.
Takada
A.
Sakane
M.
Yutaka
Y.
Hideo
H.
Transactions of the Japan Society of Mechanical Engineers
, Vol. 67
, No. 660
, pp. 1386
–1392
, 2001
.3.
A. Takada, M. Sakane, Y. Yutaka and H. Hideo, Fatigue & Fracture of Engineering Materials & Structure, submitted.
4.
JSMS Committee on High Temperature Strength of Materials, Tensile Standard Testing Method for Solders, The Society of Materials Science, Japan, 2000.
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