DP강의디프드로잉시집합조직발달과이방성거동시뮬레이션

• Published in: 대한금속재료학회지 Vol. 47; no. 5; pp. 274 - 282
• Main Authors: 송영식, Young Sik Song, 김대완, Dae Wan Kim, 양회석, Hoe Seok Yang, 한성호, Sung Ho Han, 진광근, Kwang Gun Chin, 최시훈, Shi Hoon Choi
• Format: Journal Article
• Language: Korean
• Published: 대한금속재료학회 22.05.2009
• Subjects: deep drawing; deformation texture; DP steel; rate sensitive polycrystal model
• ISSN: 1738-8228

To investigate the evolution of deformation texture in dual phase (DP) steels during deep-drawing deformation, deep-drawing experiments were performed. Microtexture measurements were conducted using electron backscattered diffraction (EBSD) to analyze texture evolution. A rate-sensitive polycrystal model was used to predict texture evolution during deep-drawing deformation. In order to evaluate the strain path during deep-drawing deformation, a steady state was assumed in the flange part of a deep-drawn cup. A rate-sensitive polycrystal model successfully predicted the texture evolution in DP steels during deep-drawing deformation. The final stable orientations were found to be strongly dependent on the initial location in the blank. Texture analysis revealed that the deep drawability of DP steels decreases as the true strain in the radial direction of the deep-drawn cup increases during deep-drawing deformation. (Received December 31, 2008)