CAJ | 학술논문

针对GH2036合金盘坯低倍亮斑问题，论文从亮斑部位的高倍、低倍入手，通过扫描电镜和能谱分析，得出亮斑主要是是富Cr、V和Nb等的碳化物。为了消除此类偏析，采取了增加高于1200℃的高温道次锻造的方法，使碳化物先溶解再弥散析出的方法，成功解决了GH2036亮斑问题。
침대GH2036합금반배저배량반문제，논문종량반부위적고배、저배입수，통과소묘전경화능보분석，득출량반주요시시부Cr、V화Nb등적탄화물。위료소제차류편석，채취료증가고우1200℃적고온도차단조적방법，사탄화물선용해재미산석출적방법，성공해결료GH2036량반문제。
Focusing on the bright spots occurred in the macrostructure of GH2036 disc billet, through the metallo?graphic structure and SEM\EDS analysis,it is concluded that the bright spots are mainly some Cr-rich(and/or V, Nb, etc.) carbides . In order to eliminate this type of segregation,by adding a new forging method with high forging tempera?ture (above 1200℃) to make the carbides dissolved at first and then dispersion precipitated , the problem about bright spots of GH2036 alloy disc billet is solved successfully.