抄録
The results obtained are as follows;
(1) A1N decomposed in sintering process and the resulting free Al diffused into the binder phase to form γ' phase {Ni3Al(Ti)}.
(2) The grain size of the Ti carbonitride particles after sintering did not change by the addition of A1N. The formation of undesirable aluminum oxide particles, which was recognized in the case of the addition of NiAl, was not found in this case. However, large pores were observed in the alloy with 2% A1N.
(3) Addition of 1% A1N was found effective for improving both R.T. hardness and R.T. as well as T.R.S. at elevated temperatures.
(4) Continuous as well as intermittent cutting tests in turning steel with the 1% A1N added alloy exhibited the most excellent wear and shock resistance.
