強い{111}〈112〉集合組織をもった高純度フェライト系ステンレス鋼の深絞り成形時の肌荒れ発生機構

スポンサーリンク

概要

• 論文の詳細を見る

•   In high purity ferritic stainless steel having strong {111}〈112〉 texture, the occurrence of surface roughening after deep drawing cup test depends on the way of taking blanks. However, the cause has not been clarified. In this study, the mechanism was examined in two ways. In the first method heterogeneous deformation behavior was examined by crystal plasticity (CP) analysis in which an adjacent two grains model was assumed. In the case that showed higher surface roughening, the direction of crystal rotation across the grain boundaries (GB) was almost the same and the dislocation density in the vicinity of the GB was higher than that in the area apart from the GB. In the case that showed lower surface roughening, crystals rotated in inverse direction across the GB and the dislocation density in the vicinity of the GB was lower than that in the area apart from the GB. In the second method the distribution of strain taking into account surface roughening was examined by EBSD. In the specimen with higher surface roughening, the area with high dislocation densities predicted by Kernel Average Misorientation (KAM) value was recognized along the GB and the convex region tended to coincide with the area with high dislocation densities. These results obtained from CP and EBSD analyses imply that the surface roughening depending on the way of taking blanks is associated with the strong {111}〈112〉 texture and is caused by the accumulated dislocation density along the grain boundaries.

• 日本金属学会 ; 1937-の論文

日本金属学会 ; 1937- | 論文

• 摩擦攪拌プロセスによる生体用β型Ti-29Nb-13Ta-4.6Zr合金の表面改質層と機械的性質
• 各種金属材料の片振り/両振り疲労における繰返し応力 : 歪曲線を用いた疲労寿命の支配因子の検討
• 無電解パラジウムめっき薄板の水素誘起曲げ変形
• 超高純度Cu陽極の含リン化が8インチウエハへの超高純度めっきプロセスにおける異物汚染および形成したCu配線の抵抗率に及ぼす影響
• 放射光トモグラフィーとX線回折を組合せた3D多結晶材料変形解析手法の開発

もっと見る

スポンサーリンク