粒子強化アルミ合金ダイカストの室温・高温疲労強度特性

概要

論文の詳細を見る
Particulate-reinforced aluminum alloy composites, using NiAl intermetallic compound and SiC ceramic particles as the reinforcement phase, were fabricated by a die-casting method. Through high cycle fatigue tests, the fatigue strength of composite materials in the as cast condition was investigated at room and elevated temperatures of 200℃ and 300℃. Fatigue strengths of each material gradually decreased with increase of temperature. Composite materials showed a higher fatigue limit, as compared with that of the matrix Al alloy within the tested temperature range. The NiAl particle reinforced material showed a good fatigue limit up to 200℃. At 300℃, the fatigue strength was dominated by the matrix strength. It was found that these fatigue behaviors were associated with the fracture surface observations.
一般社団法人日本機械学会の論文
1995-12-25