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정인상,이인철,박정식,이순린 ( In Sang Chung,In Chul Lee,Jung Sig Park,Soon Lin Lee ) 한국열처리공학회 1990 熱處理工學會誌 Vol.3 No.2
Since the reverse shape memory effect(RSME) was reported in a CuZnAl alloy, further study has been done on the mechanism of this phenomenon and reported that it occurs by the bainitic transformation. But the present authors revealed in the previous work that the RSME in a B2 CuZnAl alloy is not caused by the shear process involved in the bainitic transformation and also that the RSME takes place as the remaining α`₂phase, which is two-step transformed strain induced martensite, is newly transformed into α phase. In order to provide further evidence in supporting the facts, thus, more detailed investigations have been carried out in a DO₃CuZnAl alloy.
鄭潾相,河泰琪,李淳麟 慶北大學校 産業開發硏究所 1985 硏究報告 Vol.13 No.-
Grain boundaries in policrystalline alloys play an important role on the deformation and its strength. It is necessary that a complete understanding of the effect of grain boundary on the deformation, in order to put these alloys into the best utilization. The purpose of this study is to investigate the effects of grain boundaries on the deformation of (α+β) two phase brass polycrystalline. For this study, grains of specimens were coarsened to simplify the complicate grain boundary. After tensile deformation, slip line analysis near grain boundary was accomplished. Schmid factor, stress delivering factor and strain incompatibility were introduced in the explanation of present results. The activation of slip system which was affected by the grain boundary itself were explained by the combination of these factors. Also, it was introduced that the properties of strain incompatibility depend on the condition of grain boundaries and tensile axis.