熔模铸造
材料科学
热等静压
铸造
合金
冶金
微观结构
焊接
动火作业
航空航天
机械加工
钛合金
工作(物理)
制造工程
工具钢
机械工程
复合材料
模具
工程类
航空航天工程
作者
Laurentiu Nastac,M. N. Gungor,İbrahim Üçok,Kevin L. Klug,W. T. Tack
标识
DOI:10.1179/136404605225023225
摘要
AbstractAbstractThis paper presents a comprehensive review of the state of the art and challenges involved in investment casting of Ti–6Al–4V (Ti–6–4) alloy to improve the quality, costs and manufacturing of Ti parts. More than one hundred selected reports and articles on melting, casting and secondary processes such as hot isostatic pressing (HIPing) and heat treatment of the Ti–6–4 alloy system were reviewed to prepare this paper. The microstructure, composition and mechanical properties of Ti–6–4 alloy are discussed in detail. One of the main objectives of this paper was to identify means of improving the quality of castings, e.g. improving the mechanical properties through microstructure development and control to eliminate the casting factor, in particular for castings for use in aerospace applications. This work supports the M777 lightweight howitzer (LWH) programme, where investment casting was selected over machining and welding titanium plate to reduce part count and associated manufacturing expense for several LWH components. Another goal of this work was better to understand the investment casting process of Ti–6–4 alloy to eliminate/minimise defects in LWH components and provide useful insights to meet aggressive schedule requirements by minimising experimental production trials.Keywords: INVESTMENT CASTINGTI-6AL-4VMICROSTRUCTUREMECHANICAL PROPERTIES
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