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Effect of Strain Paths on Development of Shear Textures during Rolling in Aluminum Sheets
이계만,강형구,허무영,Olaf Engler 대한금속·재료학회 2010 METALS AND MATERIALS International Vol.16 No.5
Two different types of shear textures were observed in cold rolled aluminum sheets after normal rolling without lubrication and after asymmetrical rolling carried out with the upper and lower rolls running at different velocities. Finite element simulations showed that the formation of the different shear textures could be attributed to differences in the strain history during rolling. The development of shear textures was quantified by assuming various idealized strain paths in polycrystal-plasticity deformation texture simulations. The net shear accumulating during a rolling pass plays an important role in determining the type of the resulting shear texture.
李桂蘭(이계란) 전남대학교 글로벌디아스포라연구소 2011 디아스포라 연구 Vol.5 No.2
오늘날 중·러 양국은 양호한 방향으로 발전하고 있는 반면, ‘중국이민위협’에 관한 논조는 여전히 존재하고 있다. 이는 중·러관계와 협력에 부정적인 영향을 미치고 있다. 이 연구는 역사적·현실적인 관점에서 극동지역의 ‘중국이민 위협론’의 형성요인과 주요내용을 분석하였다. 1990년대 이후 일부 러시아 사람들이 걱정했던 ‘중국비폭력 이민’은 발생하지 않았다고 본다. 또한 극동지역에서의 이른바 ‘중국이민위협’은 존재하지 않았을 뿐더러 경제적인 수요로 극동지역으로 이주한 중국인들은 러시아지역 경제의 회복과 발전에 중요한 역할을 하였다. 우리는 대외정책을 제정함에 있어서 ‘중국이민 위협론’에 중시를 돌리고 적절한 조치를 취하여 양국 간의 발전을 증진시켜야 한다. Today, when the relationship between China and Russia develops well, the saying about "China Threat Theory of Immigrants" still exists, which brings negative effects to the relationship and cooperation between China and Russia. This paper mainly analyzes the reason and the main content of "China Threat Theory of Immigrants" in the Far East from the viewpoint of history and reality. It thinks that since the 1990 s, "nonviolent immigration of China" which some Russians are worried about has not happened; the so-called "China Threat Theory of Immigrants" in the Far East has not existed and Chinese citizens who go to the Far East for economic need has played an indispensable role for the economic recovery and development of the Russian region. When we make foreign policy, we should attach importance to "China Threat Theory of Immigrants", and take corresponding measures to farther promote the development of the relationship between the two countries.