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首页> 外文期刊>Journal of Materials Engineering and Performance >Examination of Superplastic Forming Combined with Diffusion Bonding for Titanium: Perspective from Experience
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Examination of Superplastic Forming Combined with Diffusion Bonding for Titanium: Perspective from Experience

机译：钛超塑成形与扩散结合相结合的检验：经验的视角

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摘要

Superplastic forming (SPF) combined with diffusion bonding (DB) has been used successfully for the fabrication of titanium aerospace hardware. Many of these applications have been for military aircraft, whereby a complex built-up structure has been replaced with monolithic parts. Several methods for applying the two- and four-sheet titanium SPF/DB processes have been devised, including the welding of sheets prior to forming and the use of silk-screened stop-off (yttria) to prevent bonding where it is undesirable. Very little progress has been made in the past few years toward understanding and modeling the SPF/DB process using constitutive equations and data by laboratory testing. Concerns that engineers face in designing for fatigue life, acceptable design loads, and damage tolerance are currently being studied, but the database is very limited. This is a summary of past work found in the literature and forms the foundation for additional research.
机译：超塑性成形（SPF）结合扩散结合（DB）已成功用于钛航空航天硬件的制造。这些应用中有许多是用于军用飞机的，因此复杂的组合结构已被整体零件取代。已经设计出几种采用两层和四层钛SPF / DB工艺的方法，包括在成型之前对板进行焊接，以及使用丝网印刷的挡料（氧化钇）来防止不希望的粘结。在过去的几年中，在通过本构方程和数据通过实验室测试来理解和建模SPF / DB过程方面，进展甚微。当前正在研究工程师在设计时要考虑的疲劳寿命，可接受的设计载荷和损伤容忍度，但数据库非常有限。这是对文献中过去工作的总结，并为进一步研究奠定了基础。

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