【作者】 方波； 陈志勇； 陈仲强； 刘军和； 王清江； 刘艳； 冯贞伟； 刘建荣； 宋玺玉； 魏明霞； 胡井祥；

【Author】 FANG Bo~1,CHEN Zhi-yong~2,CHEN Zhong-qiang~1,LIU Jun-he~3,WANG Qing-jiang~2,LIU Yan~1,FENG Zhen-wei~3, LIU Jian-rong~2,SONG Xi-yu~1,WEI Ming-xia~1,HU Jing-xiang~1 (1.AVIC Shenyang Liming Aero-engine(Group) Corporation,Ltd.,Shenyang 110043,China; 2.Institute of Metal Research,Chinese Academy of Sciences,Shenyang 110016,China; 3.Office of Chinese Peoples Liberation Army in Shenyang Liming Aero-engine(Group) Corporation,Ltd., Shenyang 110043,China)

【机构】 中航工业沈阳黎明航空发动机(集团)有限责任公司； 中国科学院金属研究所； 中国人民解放军驻黎明公司军代表室；

【摘要】 通过Gleeble热模拟实验,测绘Ti-55钛合金的连续冷却转变曲线(CCT图)。结果表明:当冷速由0.1℃/s加快到150℃/s时,Ti-55钛合金中主要发生β→α与β→α的相转变过程,其中β→α转变开始的临界冷速为5℃/s左右,Ti-55钛合金中马氏体转变开始温度为855℃,转变结束温度为818℃。更多还原

【Abstract】 The continuous cooling transformation(CCT) diagram of Ti-55 titanium alloy was plotted and the microstructure evolution of this alloy during cooling was discussed.The results show that when the cooling rate increases from 0.1℃/s to 150 ’C/s,there mainly exist two phase transformations,β→αandβ→α′It is also shown that the critical cooling rate of the beginning ofβ→α’ phase transformation is 5℃/s,the starting temperature of martensitic transformation is about 855 ’C and the finishing temperature is about 818℃.更多还原