SiCf/TC17/GH4169复合材料界面结构和元素扩散研究  

Study on Characterization of Interface Structure and Element Diffusion of SiC_f/TC17/GH4169 Composites

作　　者：孟航 孟凡玲[1] 武小娟[1] 孔旭 王玉敏[2] MENG Hang;MENG Fanling;WU Xiaojuan;KONG Xu;WANG Yumin(School of Mat erials Science and Engineering,Shenyang Ligong University,Shenyang 110159,China;Shi-changxu Innovation Center for Advanced Materials,Institute of Metal Research,Chinese Academy of Sciences,Shenyang 110016,China)

机构地区：[1]沈阳理工大学材料科学与工程学院,辽宁沈阳1110159 [2]中国科学院金属研究所师昌绪先进材料创新中心,辽宁沈阳110016

出　　处：《热加工工艺》2023年第16期63-68,共6页Hot Working Technology

基　　金：国家自然科学基金资助项目(52101164);中国科学院稳定支持基础研究领域青年团队计划项目(YSBR-025)。

摘　　要：采用多组元两步构筑成型方法并结合热等静压技术制备了SiCf/TC17/GH4169复合材料,研究了复合材料界面微观结构组成和元素扩散规律。结果表明,在SiCf/TC17/GH4169复合材料中,SiC纤维保持完整、圆度均匀,纤维和TC17合金形成了连续致密的TiC反应层,TC17钛合金和GH4169发生元素扩散,形成了多个反应层。GH4169中Ni、Fe、Cr扩散进入TC17,形成了TiNi_(3)、Fe Cr、TiNi、Ti_(2)Ni等反应产物,TiNi_(3)和FeCr呈交错分布,TiNi和Ti_(2)Ni各自均呈连续条状分布。TC17和GH4169形成的多个反应层总厚度为25μm,加入TC17过渡组元后,能够改善SiC纤维和GH4169界面相容性,避免纤维被高温合金侵蚀。SiC_f/TC17/GH4169 composites were prepared by using a multi-group two-step construction forming method and hot isostatic pressing.The interface structure of the composites was characterized and the element distribution was investigated.The results show that SiC fibers remain intact and show circular shape in SiC_f/TC17/GH4169 composites.A reaction layer of TiC is formed between SiC fibers and the TC17 alloy.Multiple layers are formed as an effect of element diffusion between TC17 alloy and GH4169 alloy.Ni,Fe and Cr in GH4169 alloy diffuse into TC17,then multiple regions of TiNi_(3),FeCr,TiNi,and Ti_(2)Ni show different morphologies.Cellular FeCr are together with TiNi_(3),while the TiNi layer and the Ti_(2)Ni layer are individual.The total thickness of multiple reaction layers between TC17 alloy and GH4169 alloy is 25μm.After adding TC17 alloy between SiC fibers and GH4169 alloy,the interface compatibility is improved,and severe interface reaction of SiC fibers and GH4169 alloy is prevented.

关 键 词：高温合金 复合材料 SIC纤维 界面反应 元素扩散 

分 类 号：TB333.12[一般工业技术—材料科学与工程]