Abstract
This study elucidates the effect of residual magnesium content and heating temperature on the thermal cyclic failure behaviour of ductile irons by applying repeated heating and cooling cycles. Five irons with different residual magnesium contents ranging from 0·038 to 0·066 wt-% were obtained by controlling the amount of nodulariser additions. The thermal fatigue cracking behaviour was investigated during thermal cycling from 25°C to 650, 700, 750, and 800°C, respectively. Experimental results indicate that the thermal fatigue cracking resistance of ductile iron decreases with increasing residual magnesium content. The maximum heating temperatures of 700°C and 750°C led to the most severe thermal fatigue cracking in the specimens containing 0·054 wt-% and 0·060 wt-% residual magnesium content. Recrystallisation of ferrite grain occurred when the thermal cycles exceeded a certain number after testing at 800°C, which deferred the initiation of thermal fatigue cracking.
| Original language | English |
|---|---|
| Pages (from-to) | 243-250 |
| Number of pages | 8 |
| Journal | Materials Science and Technology |
| Volume | 20 |
| Issue number | 2 |
| DOIs | |
| Publication status | Published - 2004 Jan 2 |
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Keywords
- Ductile iron
- Thermal fatigue
ASJC Scopus subject areas
- Materials Science(all)
- Condensed Matter Physics
- Mechanics of Materials
- Mechanical Engineering
Cite this
Effect of heating temperature and magnesium content on the thermal cyclic failure behaviour of ductile irons. / Cheng, C. P.; Lui, T. S.; Chen, L. H.
In: Materials Science and Technology, Vol. 20, No. 2, 02.01.2004, p. 243-250.Research output: Contribution to journal › Article
}
TY - JOUR
T1 - Effect of heating temperature and magnesium content on the thermal cyclic failure behaviour of ductile irons
AU - Cheng, C. P.
AU - Lui, T. S.
AU - Chen, L. H.
PY - 2004/1/2
Y1 - 2004/1/2
N2 - This study elucidates the effect of residual magnesium content and heating temperature on the thermal cyclic failure behaviour of ductile irons by applying repeated heating and cooling cycles. Five irons with different residual magnesium contents ranging from 0·038 to 0·066 wt-% were obtained by controlling the amount of nodulariser additions. The thermal fatigue cracking behaviour was investigated during thermal cycling from 25°C to 650, 700, 750, and 800°C, respectively. Experimental results indicate that the thermal fatigue cracking resistance of ductile iron decreases with increasing residual magnesium content. The maximum heating temperatures of 700°C and 750°C led to the most severe thermal fatigue cracking in the specimens containing 0·054 wt-% and 0·060 wt-% residual magnesium content. Recrystallisation of ferrite grain occurred when the thermal cycles exceeded a certain number after testing at 800°C, which deferred the initiation of thermal fatigue cracking.
AB - This study elucidates the effect of residual magnesium content and heating temperature on the thermal cyclic failure behaviour of ductile irons by applying repeated heating and cooling cycles. Five irons with different residual magnesium contents ranging from 0·038 to 0·066 wt-% were obtained by controlling the amount of nodulariser additions. The thermal fatigue cracking behaviour was investigated during thermal cycling from 25°C to 650, 700, 750, and 800°C, respectively. Experimental results indicate that the thermal fatigue cracking resistance of ductile iron decreases with increasing residual magnesium content. The maximum heating temperatures of 700°C and 750°C led to the most severe thermal fatigue cracking in the specimens containing 0·054 wt-% and 0·060 wt-% residual magnesium content. Recrystallisation of ferrite grain occurred when the thermal cycles exceeded a certain number after testing at 800°C, which deferred the initiation of thermal fatigue cracking.
KW - Ductile iron
KW - Thermal fatigue
UR - http://www.scopus.com/inward/record.url?scp=1542288994&partnerID=8YFLogxK
UR - http://www.scopus.com/inward/citedby.url?scp=1542288994&partnerID=8YFLogxK
U2 - 10.1179/026708304225011153
DO - 10.1179/026708304225011153
M3 - Article
AN - SCOPUS:1542288994
VL - 20
SP - 243
EP - 250
JO - Materials Science and Technology
JF - Materials Science and Technology
SN - 0267-0836
IS - 2
ER -