2 edition of Optimisation of thermomechanical processing of Ingot [gamma] TiAl-based alloys found in the catalog.
Optimisation of thermomechanical processing of Ingot [gamma] TiAl-based alloys
Thesis (Ph.D) - University of Birmingham, IRC in Materials for High Performance Applications, School of Metallurgy and Materials, Faculty of Engineering.
|Statement||by Bifang Pan.|
|The Physical Object|
|Number of Pages||134|
Effect of thermomechanical processing in Ti–Nb alloys Figure 2. Optical microstructures of as-cast alloys: (a) Ti–8Nb, (b) Ti–12Nb, (c) Ti–16Nb and (d) elemental profile of Ti and Nb. Table 2. Phases observed by XRD and their lattice constants in experimental alloys in as-cast condition. Lattice constant (Å) Alloy Phase(s) a b c. Thermo-mechanical process (TMP) – all shaping and heating operations applied to the initial material leads to semi- or final products characterized by new, better File Size: 5MB.
USB2 US13/, USA USB2 US B2 US B2 US B2 US A US A US A US B2 US B2 US B2 Authority US United States Prior art keywords alpha temperature titanium alloy working beta Prior art date Legal status (The legal status is an assumption and is not a Cited by: The influence of thermomechanical processing on the microstructure and texture evolution is examined in the present study using an AZ31 alloy modified by Ca and Y addition.
Different from traditional γ-TiAl-based alloys, which contain two basic phases (i.e., γ-TiAl and α 2-Ti 3 Al) and often small amounts of the β 0 phase, the beta–gamma TiAl-based alloy is a multiphase alloy that consists of three major phases (i.e., γ-TiAl, α 2-Ti 3 Al and β 0-Ti) and an additional phase (i.e., ω 0-Ti 4 Al 3 Nb), which Cited by: 2. USB2 US15/, USA USB2 US B2 US B2 US B2 US A US A US A US B2 US B2 US B2 Authority US United States Prior art keywords alpha forging temperature titanium alloy beta Prior art date Legal status (The legal status is an Cited by:
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Processing of γ(TiAl)‐Based Alloys Ingot Production. Powder Processing and Compaction. Thermomechanical Processing. Forging Forging of Large Ingots. Forging of Components. Single and Multi‐Step Extrusion. Rolling of Sheet and Foil.
Superplastic Forming. Further Processing Joining. MachiningCited by: In this article, the thermomechanical processing of ingot-metallurgy alpha/beta titanium alloys is summarized, with special emphasis on microstructure evolution and workability considerations.
Primary hot working dealing with the conversion of ingot structures to fine-equiaxed wrought structures is addressed. In this regard, the breakdown of lamellar microstructures, the occurrence of Cited by: Microstructure optimization of ingot metallurgy TiAl to development of high strength TiAl-based alloys the general field of thermomechanical processing for gamma alloys, giving particular.
For example, ingot cast Ti–44Al–8Nb–1B has the smallest grain size (about 50 μm) in a wide range of studied alloys, but has a ductility of only about %, whilst this alloy in its wrought form can have a ductility between 1 and %, as shown in Table 1, even though the grain size in the wrought Ti–44Al–8Nb–1B is larger than that Cited by: The development of two new ingot thermomechanical processing techniques, ISML-ITMT and FA-ITMT, is presented.
The effects of these techniques on the recrystallization behavior, grain morphology, tensile properties, fracture toughness, and stress-corrosion resistance of high-purity alloy sheet and plate is by: 2. The alloy studied in this paper is a high Nb containing TiAl-based alloy Ti–45Al–10Nb.
Alloys with this base composition are currently intensively studied, because of their superior strength 9, 10, 11, good oxidation resista 13 and excellent creep resistance .Cited by: SUMMARY The purpose of this investigation was to improve the low strain (S 1 percent) creep strength of HAYNES alloy No.
sheet by means of thermo- mechanical processing (TMP).Research efforts were organized along two major approaches: One examined TMP designed to develop high degrees of preferred grain orientation in recrystallized thin gauge sheet; and the other con.
Massachusetts Institute of Technology. Dept. of Metallurgy and Materials Science. Thesis. : Aldo Mario Reti. PART III: CASE STUDIES Chapter 14 Thermo-Mechanical Processing of Aluminium Alloys Aluminium Beverage Cans Introduction The Production of a Beverage Can The ‘Cupping’ Press The ‘Bodymaker’ Press Cleaning and Decoration Mechanical Finishing Formation of the Can Lid Filling and.
This paper describes formulation of a model for calculating recrystallized grain size for heat-treatable aluminum alloys subjected to thermomechanical processing for grain size control.
When combined with Zerer's equation for the limiting grain size during grain growth in particle-containing materials, the model can be used to calculate the Cited by: The manuscript succinctly describes the general field of thermomechanical processing for gamma alloys, giving particular attention to homogenization of large ingots in wrought processing.
Aspects of producing fine-grained fully-lamellar microstructures, having controlled lamellar characteristics in wrought mill products are by: grained alloys by conventional thermomechanical processing is limited by the achievable strains i.e. typically —3 - 4 if the resultant material is to have a minimum thickness of —1 gm.
Several new processing routes are being developed which allow larger strains to be imparted on the material. Pages (15 May ) Download full issue. Previous vol/issue. Next vol/issue. Thermomechanical processing of alpha titanium alloys—an overview. I Weiss, S.L Semiatin.
Pages select article Gamma titanium aluminide alloys—an assessment within the competition of aerospace structural materials. The high temperature mechanical properties of TiAl based alloys were studied after the ingot had been canned-forged with temperature in the range of 1 ~1 °C and strain rate in the range of.
Abstract. A wide variety of Mg alloys have been processed by Thixomolding ® followed by thermomechanical processing (TMP)—to increase tensile, creep and fatigue strength, ductility and formability.
These alloys encompass variations in Al, Zn, Ca, Cited by: 2. Conference: Thermo-mechanical processing (TMP) of TiAl-2Nb-2Cr based alloys. Cost-effective TiAl-based materials p. Development of cost-effective technique for sheet rolling of [gamma]-TiAl based alloys p. Synthesis of gamma-TiAl/Al[subscript 2]O[subscript 3] in-situ composites p.
Processing and properties of TiAl alloy manufactured with MA-PDS process p. File Size: 8KB. A method for thermomechanically processing gamma titanium aluminide alloy wrought products comprises the following steps: a) a near gamma titanium aluminide alloy ingot is cast; b) the ingot is hot isostatically pressed (HIP'ed) to seal off casting defects; c) the HIP'ed ingot is prepared into suitable forging preforms with or without intermediate homogenization heat treatment; d) the forging Cited by: Two Gamma-TiAl-based alloys of TiAl-2Nb-2Cr (at.%) and TiAl-2Nb-2Mn-1B (at.%) were used as the substrate materials.
The coatings’ deposition process was prepared using slurry method. A thermomechanical process for grain refinement in precipitation hardening aluminum alloys is reported. The process includes severe overaging, deformation, and recrystallization steps.
Microstructural studies by optical and transmission electron microscopy of grain refinement in aluminum have revealed that precipitates formed during the overaging step create preferential Cited by:. The effects of heat treatment and deformation processing on the microstructures and properties of Î³-TiAl based alloys produced by ingot metallurgy (I/M) and powder metallurgy (P/M) techniques.Keywords: Thermomechanical processing; hot working; microstructure 1.
Introduction Hot workability Hot workability of a metal or alloy is the capability to be deformed under conditions of high temperature and relatively high strain rates.
The two characteristics that govern hot workability are deformation resistance and ductility. Deformation Mechanisms and Microstructural Evolution of γ + γ′ Duplex Aggregates Generated During Thermomechanical Processing of Nickel‐Base Superalloys (Pages: ) Beijiang Zhang Integrated Thermal Process Optimization of Alloy Plus® for Additive Manufacturing (Pages: ) Author Index Superalloys (Pages: