고망간 내열강의 연구 (1) = The Study of High Manganese heat Resisting Steel, Part 1

국문 초록 (Abstract)

本硏究는 Ni을 Mn으로 代替시킨 高Mn耐熱鋼의 時效過程中 析出相과 機械約 性質에 關하여 硏究하였다. Mn과 Cr의 含量을 달리하는 鋼에다 높은 含量의 室素를 添加시켰고 그 위에 强化元素인 Nb, Mo, W, B 등을 添加하여 合金의 時效硬化性, 高溫 引張强度, 耐酸化性 및 鍛造性을 調査하였다. 그 結果 위의 諸性質들이 旣存 耐熱鋼에 떨어지지 않았다.
本 合金에서 나타나는 析出相은 M_(23)C_6, Nb(C, N), Cr₂N 및 σ相이었으며 主要 硬化相은 M_(23)C_6 임이 判明되었다.

다국어 초록 (Multilingual Abstract)

The principal objective of this investigation was to examine precipitated phases during aging sequence and mechanical properties of high manganese heat resisting steels in which manganese was completely substituted for nickel. The influence of alloying elements on the aging hardenability, elevated temperature tensile strength, oxidation resistance and forgeability was investigated by adding elements such as niobium, molybdenum, tungsten, and boron to the steels containing various amounts of manganese and chromium and high content of nitrogen. It was found that the major hardening phase was M_(23)C_6 particles. The other phases identified were Nb(C, N), Cr₂N and σ phase.