pISSN : 1598-706X / eISSN : 2288-8381
한국주조공학회지 (35권4호 88-98)
Effect of Quenching and Tempering Temperatures on Mechanical Properties of A487 Cast with Different C Contents
C 함량이 다른 A487 주강품의 열처리 조건에 따른 기계적 및 부식 특성
Woo-Jin Jung, Dae-Ho Jeong, Young-Cheol Lee*, Jae-Hyun Lee** and Sang-Shik Kim†
Dept of Met. and Mat. Eng., ReCAPT, Gyeongsang National University, Chinju 52828, Korea, *Dongnam Regional Divison, Korea Institute of Industrial Technology, Busan 46742, Korea, **Dept. of Mat. Sci. and Eng., Changwon National University, Changwon 51140,
The effects of quenching and tempering temperatures on the tensile, impact and corrosion properties of A487 alloy cast with different C contents of 0.16, 0.19 to 0.23 wt.% were examined. The impact tests were conducted at 25oC and −60oC and the immersion test was performed using 3.5% NaCl solution for 14 days. The quenching temperature affected the mechanical properties of A487 alloy cast, while the agnitude of change varied depending on the C content. The increase in tempering temperature showed the typical trend of decreasing tensile strength and increasing impact properties. The change in quenching and tempering temperature in this study did not affect the corrosion properties of A487 alloy significantly. The change in mechanical and corrosion properties of A487 with different C contents was discussed based on the microstructural and fractographic observation.
Tensile property, Impact property, Corrosion property, A487, Quenching temperature, Tempering temperature
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