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Effect of Asymmetric Hot Rolling on the Texture Evolution of Fe–3%Si Steel
Tae‑Wook Na,Hyung‑Ki Park,박창수,Hyung‑Don Joo,Jong‑Tae Park,Heung Nam Han,Nong‑Moon Hwang 대한금속·재료학회 2018 METALS AND MATERIALS International Vol.24 No.6
In Fe–3%Si steel, the hot rolling process affects not only the hot rolling texture but also the primary recrystallization texture. Here, the effect of asymmetric hot rolling was studied by comparing the difference in the texture evolved between asymmetricand symmetric hot rolling. The effect of asymmetric hot rolling on the texture of primary recrystallized Fe–3%Si steel wasalso studied. The symmetric hot rolling of Fe–3%Si steel produces a rotated cube texture at the center but Goss and coppertextures near the surface. Asymmetric hot rolling tends to produce Goss and copper textures even at the center like thetexture near the surface. After primary recrystallization, the dominant texture at the center changes from {001} <210> to{111} <112> and the new texture has a higher fraction of the grains which make the low energy boundary with Goss grainsthan that of symmetric hot rolling.
열간 비대칭 압연한 AA3003 판재의 집합조직과 소성변형비 변화
보보무로드 함라쿠로프,이철우,김인수 한국소성∙가공학회 2019 소성가공 : 한국소성가공학회지 Vol.28 No.5
The plastic strain ratio is one of the factors of the deep drawability of metal sheets. The plastic strain ratio of Al sheet is low value. Therefore, it is necessary to increase the plastic strain ratio in order to improve the deep draw ability of the Al sheet. This study investigated the increase of the plastic strain ratio and the texture change of AA3003 sheet after the hot asymmetric rolling. The average plastic strain ratio of the initial AA3003 sheets was 0.69. After 83% hot asymmetric rolling at 200°C, the average plastic strain ratio was 0.83. The average plastic strain ratio of the 83% hot asymmetrically rolled AA3003 sheet at 200°C is 1.2 times higher than that of the initial AA3003 sheet. The ΔRof 83% hot asymmetrically rolled AA3003 sheet at 200°C is 0.83 times lower than that of the initial AA3003 sheet. This result is due to the development of the intensity of γ-fiber texture and reduces the intensity of {001}<110> and {001}<100> textures after hot asymmetric rolling of AA3003 sheet.
열간 비대칭 압연한 AA1050 Al 판재의 집합조직과 소성변형비 변화
보보무로드 함라쿠로프,이철우,김인수 한국소성∙가공학회 2019 소성가공 : 한국소성가공학회지 Vol.28 No.5
The plastic strain ratio is one of the factors of the deep drawability of metal sheets. The plastic strain ratio of Al sheet is low value. Therefore, it is necessary to increase the plastic strain ratio in order to improve the deep drawability of the Al sheet. This study investigated the increase in the plastic strain ratio and the texture change of AA1050 Al sheet after the hot asymmetric rolling. The average plastic strain ratio of initial AA1050 Al sheets was 0.41. After 84% hot asymmetric rolling at 400°C, the average plastic strain ratio was 0.77. The average plastic strain ratio of 84% hot asymmetrically rolled AA1050 Al sheet at 400°C is 1.9 times higher than that of initial AA1050 Al sheet. The ΔRof 84% hot asymmetrically rolled AA1050 Al sheet at 400°C is 1/2 times lower than that of initial AA1050 Al sheet. This result is due to the development of the intensity of the γ-fiber texture and the decrease of the intensity of {001}<100> texture after the hot asymmetric rolling of AA1050 Al sheet.