pISSN : 1598-706X / eISSN : 2288-8381
한국주조공학회지 (35권3호 45-52)
Mechanical and Corrosion Properties of A487 Cast with Different C and Cr/Mo Contents
A487 주강품의 C 및 Cr/Mo 함량 변화에 따른 기계적 및 부식 특성
Woo-Jin Jung, Dae-Ho Jeong, Young-Cheol Lee*, Jae-hyun Lee** and Sang-shik Kim†
Department of Metallurgical and Materials Engineering, ReCAPT, Gyeongsang National University,,*Dongnam Regional Divison, Korea Institute of Industrial Technology,,**Department of Materials Science and Engineering, Chanagwon National University
The effect of different C and Cr/Mo contents, which were varied within the range allowed in the relevant specification, on the mechanical and corrosion properties of A487 alloy cast steel were examined. The increase in strength level with increasing C content and the decrease in strength along with the increase in tensile elongation with decreasing Cr/Mo contents were observed in A487 alloys with different C and Cr/Mo contents. At room temperature, the decrease in Cr/Mo content was beneficial in improving the impact properties of A487 alloy, with no notable difference in absorbed energy with varying C content. The impact properties of A487 alloy at −60oC, on the other hand, greatly improved with the increase in C and the decrease in Cr/Mo contents. The corrosion behavior of A487 alloys in 3.5% NaCl solution did not show any meaningful change with different C and Cr/Mo contents.
Tensile property, Impact property, Corrosion property, A487, Low temperature