1000°C級ミニチュアクリープ試験機の開発およびIN713C-MIM材のクリープ強度

抄録

This paper presents the development of a creep testing machine with a maximum temperature 1000°C for utilizing miniature specimens and evaluation of creep strength for IN713C-MIM. The remaining life assessment of actual devices using the miniature specimens are expected as the better method because it can decrease the damage to them by sampling a specimen, so the test dates about miniature specimens are required. This study shows the developed testing machine and verification test results as well as some experimental results using IN713C-MIM. However, the MIM-materials creep strength is lower than the casting materials, although the experimental result are very few. This research aims at meeting the above needs and creating the superior heat-resistant alloy. The creep rupture time of IN713C-MIM and improvement of strength have been done by authors, but more detailed evaluating of the strength is also necessary. For this study, a suitable testing was required to evaluate creep strength more precisely.