Abstract
This work was carried out to clarify the influence of sintering temperature and time on fatigue strength of iron powder compacts with different particle sizes.
The fatigue strength of iron compacts made from -100 mesh powder depended slightly on sintering temperature, but as sintering time increased at 1423K, it increased owing to the increase in the pore shape parameter and the spaces between pores.
Comparing the fatigue strengths at the same density, it was observed that the coarse particle (-100+150 mesh) gave lower strength than the fine particle (-325 mesh). In both the compacts, as the sintering time increased, the fatigue strengths increased remarkably by the variation of the pore structures.
