CHE SIGNIFICA SUPERPLASTIC IN INGLESE
superplasticity
Nella scienza dei materiali, la superplasticità è uno stato in cui il materiale cristallino solido viene deformato ben oltre il solito punto di rottura, di solito più di circa il 200% durante la deformazione a trazione. Tale stato viene normalmente raggiunto ad alta temperatura omologa, tipicamente la metà del punto di fusione assoluto. Esempi di materiali superplastici sono alcuni metalli finissimi e ceramiche. Altri materiali non cristallini come vetro di silice e polimeri deformano in modo simile, ma non sono chiamati superplastici, perché non sono cristallini; Piuttosto, la loro deformazione è spesso descritta come flusso newtoniano. Il materiale deformato in modo superplastico diventa più sottile in modo molto uniforme, piuttosto che formare un "collo" che porta alla frattura. Inoltre, la formazione di microvioli, che è un'altra causa di frattura precoce, è inibita. Nei metalli e nella ceramica, i requisiti per essere superplastici includono una grana fine e una dispersione fine delle particelle termicamente stabili che agiscono per fissare i confini dei grani e mantenere la struttura a grana fine alle alte temperature e l'esistenza di due fasi necessarie per la deformazione superplastica .
definizione di superplastic nel dizionario inglese
La definizione di superplastico nel dizionario è facilmente modellabile a temperature elevate senza fratturazione. Un'altra definizione di superplastico è un metallo, una lega, ecc.
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10 LIBRI IN INGLESE ASSOCIATI CON «SUPERPLASTIC»
Scopri l'uso di
superplastic nella seguente selezione bibliografica. Libri associati con
superplastic e piccoli estratti per contestualizzare il loro uso nella letteratura.
1
Superplastic Flow: Common Basis for a Ubiquitous Phenomenon
A systematic approach based on the methods of mechanics of solids is likely to prove useful in improving the situation. The present book aims at the following. 1.
K.A. Padmanabhan, R.A. Vasin, F.U. Enikeev,
2001
2
Advances in superplasticity and
superplastic forming: ...
Scientists and engineers employed at automotive and aerospace manufacturing companies, as well as researchers based at universities, will find this volume particularly useful.
Eric M. Taleff, Minerals, Metals and Materials Society. Structural Materials Committee, Peter A. Friedman,
2004
3
Superplastic Forming of Advanced Metallic Materials: Methods ...
Part two discusses ways of modelling superplastic forming processes whilst the final part of the book considers applications, including superplastic forming of titanium, aluminium and magnesium alloys.
4
Titanium: A Technical Guide
Table 5.5 Temperatures for hot forming of titanium and some titanium alloys
Forming temperature At still higher temperatures, some alloys exhibit a
phenomenon known as superplasticity. Superplastic behavior has become
widely used in the ...
Matthew J. Donachie,
2000
5
Superplasticity in Metals and Ceramics
A materials engineering monograph in the Cambridge Solid State Science Series, first published in 1997.
T. G. Nieh, J. Wadsworth, O. D. Sherby,
2005
6
Superplasticity: Microstructural Refinement And
Superplastic ...
An excellent book that sets out the field of superplasticity in an elegant and consistent way. . . . This book goes far beyond the conventional reviews of the superplastic phenomenon.
Oskar Akramovich Kaĭbyshev, Farid Z. Utyashev,
2005
3.5.5 Superplastic Forming and Diffusion Bonding Titanium exhibits superplastic
behavior and the capability for diffusion bonding. These two characteristics can
be used individually or jointly for fabricating titanium components. A collection of
...
Gerd Lütjering, James C. Williams,
2007
Professors J. A. Belk and A. E. W. Smith, and Mr C. A. Hare, of the Royal Military
College of Science, Shrivenham, have developed a superplastic zinc-based alloy
, ZAM. Patents specifications for ZAM quote the contents of the alloy as "zinc ...
9
Aluminum and Aluminum Alloys
0.1 u5 NT6 10 5 10"4 10"3 10 □' 10"' Strain rate, s ' Argon pressure \U>"° Step 1
Step 2 £ 10 10"' 10"3 10~2 10" Strain rate, s"1 (b) pjn 1£ Stress versus strain (a)
and corresponding *" strain rate sensitivity m (b) for superplastic aluminum alloy ...
10
Nanomaterials: Synthesis, Properties and Applications, ...
13.2.1 Background of superplasticity Superplasticity refers to the capability of
some polycrystalline materials to undergo extensive tensile deformation without
necking or fracture. Although superplastic forming is now an established
industrial ...
A.S Edelstein, R.C Cammaratra,
1998
10 NOTIZIE DOVE SI INCLUDE IL TERMINE «SUPERPLASTIC»
Vedi di che si parla nei media nazionali e internazionali e come viene utilizzato il termine ino
superplastic nel contesto delle seguenti notizie.
Environment-Controlled Dislocation Migration And Superplasticity in …
What would happen if peanut brittle, under certain conditions, acted like taffy? Something similar to that happens to a two-dimensional dichalcogenide analyzed ... «Tech Fragments, mag 15»
RTI Advanced Forming Inc. Marks 50 Years in Washington
The presses they used were “strictly conventional, no SPF (superplastic forming),” Schrecengost added. “It was simple stuff.” The platform was for the Phantom ... «The Missourian, feb 15»
Apple Filed a Liquid Metal Patent in Korea for a new Heat Sink
However, none of the conventional heat sink materials have a superplastic forming characteristic that would allow them to be thermoformed by processes such ... «Patently Apple, ott 14»
2015 Panoz Esperante Spyder Gets 25th Anniversary Edition
The Esperante is still based around a modular extruded aluminum chassis with a carbon fiber superstructure and Superplastic Forming (SPF) aluminum body ... «MotorTrend Magazine, set 14»
The Outlook for Thermoplastics in Aerospace Composites, 2014-2023
... employs a disposable diaphragm, typically made from expensive superplastic-formed aluminum or polyimides which vastly increase recurring process costs. «High Performance Composites, set 14»
Bashing metal myths
One piece of kit the centre is particularly proud of is its new 1200T superplastic forming (SPF) press — the world's largest in a research setting — which has ... «The Engineer, ago 14»
Basics of Aerospace Materials: Aluminum and Composites
Superplastic aluminum: Superplastic metal forming, a process similar to vacuum forming plastic sheets, has been used to form low-strength aluminum into ... «Machine Design, giu 14»
Recyclable superplastics made with old chemistry
With an accidental tweak to a classic chemical reaction, scientists have created the first easily recyclable forms of mighty plastics. The discovery provides the ... «Science News, mag 14»
R&D allows China to master superplastic forming technology
Chinese aviation technology research institute began developing its own superplastic forming technology — which can stretch metals greatly and form hard ... «WantChinaTimes, set 13»
Hot form press operator
The press heats the metal until it reaches a superplastic state and then we mould it using physical pressure and applying gases to shape it exactly as the ... «Financial Times, mar 13»