CAJ | 학술논문

使用金相显微镜（OM）、扫描电镜（SEM）、透射电镜（TEM）和X射线衍射谱仪（XRD），研究了不同温度热处理后 Ti-22Al-25Nb 合金电子束焊接接头显微组织，对接头拉伸性能及断口分析后认为，经过850℃保温2h空冷的热处理可以有效地改善接头的室温和高温拉伸性能。
사용금상현미경（OM）、소묘전경（SEM）、투사전경（TEM）화X사선연사보의（XRD），연구료불동온도열처리후 Ti-22Al-25Nb 합금전자속한접접두현미조직，대접두랍신성능급단구분석후인위，경과850℃보온2h공랭적열처리가이유효지개선접두적실온화고온랍신성능。
The post-weld heat treatment (PWHT) parameters of 800℃, 850℃and 900℃were carried out. Aimed at the electron beam welding joints of Ti-22Al-25Nb alloy before and after the heat treatment, the tensile tests on room temperature and 650℃were carried out. The microstructure, mechical properties of Ti-22Al-25Nb (at%) alloys welded joints were investigated by using the equipments optical microscopy (OM), scanning electron microscopy (SEM) and X-ray diffraction (XRD). The result shows that the mechanics performance of the joints with PWHT of 850℃holding two hours followed cooling in air would get better.