TY - JOUR
T1 - Effect of pearlite on the vibration-fracture behavior of spheroidal graphite cast irons under resonant conditions
AU - Lin, S. C.
AU - Lui, T. S.
AU - Chen, L. H.
AU - Song, J. M.
N1 - Funding Information:
The authors thank the National Science Council, Republic of China, for financial support of this research under Contract No. NSC 90-2216-E-006-043.
PY - 2002
Y1 - 2002
N2 - This investigation examined the effect of pearlite on the vibration-fracture behavior of spheroidal graphite (SG) cast irons under resonant conditions. The experimental materials can be divided into four groups, according to their pearlite content. They are (1) a fully pearlitic matrix, (2) a bull's-eye structure, (3) a colony-type pearlitic structure, and (4) a fully ferritic matrix. Experimental results indicated that the variation of pearlite content significantly affects the initial deflection amplitude. Increasing the amount of pearlite in the matrix leads to a lower logarithmic decrement and, thus, reduces the deflection amplitude. Moreover, the distribution and amount of pearlite considerably influence the crack-propagation mode. The specimen with a bull's-eye structure exhibits the highest resonant-vibration fracture resistance. This can be attributed to the lower initial deflection amplitude caused by the ferrite rim around graphite particles and the better crack-propagation resistance of the surrounding pearlite.
AB - This investigation examined the effect of pearlite on the vibration-fracture behavior of spheroidal graphite (SG) cast irons under resonant conditions. The experimental materials can be divided into four groups, according to their pearlite content. They are (1) a fully pearlitic matrix, (2) a bull's-eye structure, (3) a colony-type pearlitic structure, and (4) a fully ferritic matrix. Experimental results indicated that the variation of pearlite content significantly affects the initial deflection amplitude. Increasing the amount of pearlite in the matrix leads to a lower logarithmic decrement and, thus, reduces the deflection amplitude. Moreover, the distribution and amount of pearlite considerably influence the crack-propagation mode. The specimen with a bull's-eye structure exhibits the highest resonant-vibration fracture resistance. This can be attributed to the lower initial deflection amplitude caused by the ferrite rim around graphite particles and the better crack-propagation resistance of the surrounding pearlite.
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U2 - 10.1007/s11661-002-0384-y
DO - 10.1007/s11661-002-0384-y
M3 - Article
AN - SCOPUS:0036694714
SN - 1073-5623
VL - 33
SP - 2623
EP - 2634
JO - Metallurgical and Materials Transactions A: Physical Metallurgy and Materials Science
JF - Metallurgical and Materials Transactions A: Physical Metallurgy and Materials Science
IS - 8
M1 - 384
ER -