2039 アルミニウム合金押出し形材の疲労特性に及ぼす表面再結晶の影響(S11-3 表面処理・応力比等の影響,S11 金属材料の超高サイクル疲労特性の解明)

概要

論文の詳細を見る
Specimen was taken out of recrystallization tissue and fiber tissue of extruded 6N01 aluminum alloys, and the fatigue testing was done. As a result, the fatigue life of recrystallization tissue was shorter than that of fiber tissue. In addition, three extruded aluminum alloys with different ratio of recrystallization tissue was done fatigue testing. {conventional material (J5C), intermediate material (6F) and improved material (6S)} Results of the fatigue testing showed that the fatigue strength of 6S and 6F is stronger than that of J5C. But, the fatigue ratios of 6S and 6F were almost the same. Results of the microstructure observation shows that the fatigue characteristics doesn't depend on the ratio of the recrystallized grain on the surface, but on the size of the recrystallized grain.
2007-09-07