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https://www.riss.kr/link?id=A3047585
1992
-
500
KCI등재
학술저널
442-449(8쪽)
0
상세조회0
다운로드다국어 초록 (Multilingual Abstract)
Grey cast iron containing a small amount of Cu and Mo to improve the effect of heat treatment and microstructure were cast and them austenitized. After austenitizing the specimens of castings were austempered at 250℃, 300℃ and 350℃. The effects ...
Grey cast iron containing a small amount of Cu and Mo to improve the effect of heat treatment and microstructure were cast and them austenitized. After austenitizing the specimens of castings were austempered at 250℃, 300℃ and 350℃. The effects of matrix structures on mechanical properties and fracture characteristics at the different austempering temperature were investigated. Tensile strength, hardness and impact toughness of austempered grey cast iron showed maximum valve 359㎫, 321 HB, 3.9 CVN respectively at the lowest austempering temperature, 250℃. K_(IC) of gref cast iron at a austempering temperature, 250℃, showed maximum 44㎫.m^(½) even though the amount of retained austenite in it is only 16%. This mainly comes from the refinement of the retained austenite. Quasi-cleavage pattern with a little fit of fibrous pattern was shown on the fractured surface of austempered grey cast iron at all of the temperatures tested.
크롬주철의 기계적 성질에 미치는 합금원소 ( V , Ti ) 와 열처리의 영향에 관한 연구
용융 (熔融) 마그네슘중 SiC 입자분산거동에 미치는 합금원소의 영향