【摘要】 用热压逐层叠置的TiWSi合金箔与Al箔的方法制备了Ti-46Al-4W-Si的合金板材。热压工艺为645℃/15h+900℃/30h+1370℃/2h。利用扫描电子显微镜(SEM)和X射线衍射仪(XRD)对板材的组织和成分进行了分析。板材呈近全片层组织。由于Kirkenall效应以及压力不足等原因,基体中有孔洞产生。基体中有Ti5Si3以及B2相析出,这与原始钛合金箔材的组织有关。更多还原

【Abstract】 Ti-44Al-4W-Si(at%) alloy sheet with near fully lamellar microstructure was fabricated by hot pressing alternate titanium alloy foils and Al foils.The procedure was 645 ℃/15 h + 900℃/30 h + 1370 ℃/2 h.XRD and SEM were used to determine the corresponding microstructure.There are some voids in the sheet due to the Kirkendall effect and the lack of insufficient pressure.Ti5Si3 and B2 phase coexisted in the matrix,which is attributed to the microstructure of the starting titanium alloy foil.更多还原