View Full-text

pISSN : 1598-706X / eISSN : 2288-8381


(논문)연구논문

한국주조공학회지 (27권4호 159-166)

Effects of Alloying Elements on the Mechanical Properties of Annealed and Normalized 3.60wt%C-2.50wt%Si Ductile Cast Irons

3.60wt%C-2.50wt%Si 구상훅연주철의 소둔 및 소준시 기계적 성질에 미치는 합금 원소의 영향

Jong-Kyu Baek, Gap-Seong Seo*, Hae-Wook Kwon

Yeungnam University, *Daehan Special Metal Co.

Abstract

Effects of alloying elements on the mechanical properties of 3.60wt%C-2.50wt%Si ductile cast iron with annealing and normalizing were investigated. Yield and tensile strengths were increased from 278 and 415 MPa to 316 and 440 MPa respectively as manganese content was increased upto 0.45wt% while elongation was decreased from 24.2 to 5.0%. The formers were increased and the latter was decreased with the increased amount of copper, molybdenum or nickel added. Meanwhile the tensile strength of annealed specimen was increased with the amount of alloying elements added, it was decreased by annealing. It was increased greatly by normalizing and the amount of alloying elements added except molybdenum.

Keywords

Cast iron, Ductile cast iron, Heat-treatment, Mechanical properties, Alloying elememt