CAJ | 학술논문

应用马架扩孔、马架扩孔＋环轧和完全环轧三种工艺制备TC4钛合金大型环件，分析不同制备工艺下合金的显微组织和力学性能。研究结果表明，不同制备工艺获得的TC4钛合金大型环件的显微组织几乎没有差别，无论哪种工艺制备的TC4钛合金环件都呈现等轴组织，且不同部位的显微组织一致均匀。综合考虑三种工艺获得的环件的室温和高温性能，推荐采用马架扩孔＋一火次环轧的制备工艺，通过该工艺获得的环件的室温和高温力学性能均可达到较好水平。
응용마가확공、마가확공＋배알화완전배알삼충공예제비TC4태합금대형배건，분석불동제비공예하합금적현미조직화역학성능。연구결과표명，불동제비공예획득적TC4태합금대형배건적현미조직궤호몰유차별，무론나충공예제비적TC4태합금배건도정현등축조직，차불동부위적현미조직일치균균。종합고필삼충공예획득적배건적실온화고온성능，추천채용마가확공＋일화차배알적제비공예，통과해공예획득적배건적실온화고온역학성능균가체도교호수평。
Three kinds of processing method of open forging , open forging+looping mill rolling and complete looping mill rolling were used for the preparation of TC 4 large-sized ring .The microstructures and mechanical properties of the rings produced by different processing methods were tested and analyzed .The results indicate that TC 4 titanium alloy rings show equiaxed microstructure and little difference after various processing methods .At the same time, the mi-crostructure of the rings in different zones also show uniformity , which indicate the processing method produce little effect on the microstructure of TC 4 titanium alloy rings . The mechanical properties results indicate the processing method of open forging+looping mill rolling shows more advantage in comparison with others processing methods .The room-temperature and high-temperature properties of TC4 titanium alloy rings after open forging +looping mill rolling are all preferable .