XD法原位自生ZL201/TiB_(2p)复合材料的热强特征研究  

High Temperature Mechanical Strength of XD ZL201/TiB_(2P) Composites

作　　者：李邦盛[1] 蒋海燕[1] 范洪波[1] 李庆春[1] 袁广江[2] 米国发 

机构地区：[1]哈尔滨工业大学,哈尔滨150001 [2]北京航空材料研究院,北京100095

出　　处：《材料工程》1999年第11期22-23,47,共3页Journal of Materials Engineering

摘　　要：采用ＸＤ 工艺在Ｔｉ－Ａｌ－Ｂ体系中可原位自生出亚微米级ＴｉＢ２ 颗粒增强相， 借助高分辨扫描电镜分析了原子尺度上的ＴｉＢ２Ｐ／铝基体界面结构， 并测量了复合材料的高温力学性能。结果表明， 其界面清洁， 匹配理想， 在２５０℃的抗拉强度、屈服强度、延伸率分别达３００ＭＰａ， ２３０ＭＰａ， １３％ 。Submicron in situ TiB 2 particulars were precipitated in Ti Al B by XD process The interfacial structures on the atomic scale were studied by HREM High temperature mechanical properties were measured Results show that the interface is atomically clear,smooth and free from any interfacial phases At 250℃,the tensile strength, yield strength, and elongation of the composites is up to 300MPa,230MPa,13% respectively

关 键 词：原位自生 复合材料 热强性 XD工艺 

分 类 号：TB332[一般工业技术—材料科学与工程]