摘要
研究了反应热压技术（包括反应轴向热压（ＲＨＰ）和反应热等静压（ＲＨＩＰ）法）制备的Ｎｉ５０Ａｌ２０Ｆｅ３０（ＮｉＡｌ（Ｆｅ））基原位复合材料的微观组织和拉伸性能。结果表明，反应热压技术制备的ＮｉＡｌ（Ｆｅ）基复合材料中原位合成的ＴｉＣ颗粒细小，分布均匀、弥散，但复合材料不完全致密，孔隙的存在损害了其拉伸性能。二次加工工艺可提高ＮｉＡｌ（Ｆｅ）基原位复合材料的致密性和组织均匀性，从而显著改善其力学性能。
The room tensile properties and microstructure are investigated in 20vol.%TiCp/Ni50Al20Fe30 in situ composites fabricated by reactive hot pressing processes (including reactive hot axial direction pressing (RHP) and reactive hot isostatic pressing (RHIP) techniques). Results show that TiC in situ particles are fine and even, however, it is difficult for the composites to be densely fabricated by reactive hot pressing processes, Existence of porosity seriously decreases the tensile properties of the composites. The evenness of microstructure and density of composites are improved by an additional hot rolling process, which obviously increases their room temperature mechanical properties.
出处
《航空材料学报》
EI
CAS
CSCD
1999年第2期35-42,共8页
Journal of Aeronautical Materials
关键词
复合材料
镍铝合金
热压工艺
拉伸性能
intermetallic compound matrix composite
NiAl(Fe)
fabricating process
tensile property
