Textures of Rectangular Extrusions of Ti‐47Al‐2Cr‐2Nb‐0.15B

Liu, Renci; Liu, Dong; Tan, Jun; Cui, Yue; Yang, Rui

doi:10.1002/9781118998489.ch22

Cited by 1 publication

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“…I B alloy after extrusion in t h e two-phase field and after solid solution t r e a t m e n t at T a were studied [38]. T h e strong deformation t e x t u r e of t h e a 2 phase has a significant influence on a grain growth during subsequent a solid solution t r e a t m e n t which deviates f r o m n o r m a l growth in such a way t h a t t h e growth r a t e is much slower during primary recrystallization b u t becomes explosive d u r i n g secondary recrystallization.…”

Section: Texture Evolution During Extrusionmentioning

confidence: 99%

Fundamental and Application‐Oriented Research on Gamma Alloys

Yang

2014

Gamma Titanium Aluminide Alloys 2014

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Recent activities of 7 -T i A l related research at I M R is reviewed in this p a p e r . O n t h e f u n d a m e n t a l side, first principles computations were performed t o relate site occupancies and atomic interactions t o t h e mechanisms of s t r e n g t h e n i n g and phase t r a n s f o r m a t i o n , and to u n d e r s t a n d surface adsorption of oxygen a n d oxidation. D e f o r m a t i o n f u n d a m e n t a l s such as nucleation of superdislocations in t h e 7 phase were studied t h r o u g h molecular d y n a m i c s modeling. O u r application-oriented work covers extrusion a n d n e t -s h a p e forming t h a t includes b o t h precision casting a n d powder metallurgy. T h e evolution of textures d u r i n g t h e coupled process of deformation, phase transformation, recrystallization a n d grain g r o w t h during extrusion and subsequent heat t r e a t m e n t was characterized a n d related to mechanical properties. Centrifugal casting was employed to obtain quality p a r t s having thin sections b u t large size in 1-or 2-dimensions, a n d t h e problems such as misrun, cavities, surface porosity a n d inclusion as well as dimension distortion were tackled. Powder metallurgy was studied essentially as a technology u p g r a d e of precision casting, forming c o m p o n e n t s of complex s h a p e .

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Section: Texture Evolution During Extrusionmentioning

confidence: 99%