1-20 of 336 Search Results for

matrix microstructure

Follow your search
Access your saved searches in your account

Would you like to receive an alert when new items match your search?
Close Modal
Sort by
Series: ASM Desk Editions
Publisher: ASM International
Published: 01 December 1998
DOI: 10.31399/asm.hb.mhde2.a0003191
EISBN: 978-1-62708-199-3
... machinability of cast irons, steels, and aluminum alloys. It presents data on hardness values and the effect of the matrix microstructure of cast iron on tool life. It also explains how a higher inclusion count improves the machinability of steels and why aluminum alloys can be machined at very high speeds...
Series: ASM Handbook
Volume: 4E
Publisher: ASM International
Published: 01 June 2016
DOI: 10.31399/asm.hb.v04e.a0006258
EISBN: 978-1-62708-169-6
... composites. It discusses the microstructures used for the most common magnesium alloys used in metal-matrix composites, namely, magnesium-aluminum, magnesium-rare earth and magnesium-lithium alloys. The article focuses on the most common methods of heat treatment, including solution heat treatment...
Series: ASM Handbook
Volume: 22A
Publisher: ASM International
Published: 01 December 2009
DOI: 10.31399/asm.hb.v22a.a0005409
EISBN: 978-1-62708-196-2
... hot working enhances the diffusivity of solutes through the beta matrix by a factor of the order of 50, the times required for splitting alpha lamellae would be of the order of 1 min at 955 °C or 20 min at 900 °C. Thus, the breakdown of the colony-alpha microstructure during deformation at low strain...
Series: ASM Handbook
Volume: 4E
Publisher: ASM International
Published: 01 June 2016
DOI: 10.31399/asm.hb.v04e.a0006277
EISBN: 978-1-62708-169-6
... nucleation and growth of α precipitates from supersaturated β matrix ( Ref 5 ) or defect-mediated nucleation and growth by intermediate phases (such as martensite α′, or α″, and metastable ω phase) ( Ref 5 , 6 ), precursory concentration modulation within the β-phase matrix ( Ref 7 , 8 , 9...
Series: ASM Desk Editions
Publisher: ASM International
Published: 01 December 1998
DOI: 10.31399/asm.hb.mhde2.a0003085
EISBN: 978-1-62708-199-3
... the two distinct liquidus curves meet. At this temperature, both α and β solid phases must deposit on the grain nuclei until all of the liquid is converted to solid. This simultaneous deposition results in microstructures made up of distinctively shaped particles of one phase in a matrix of the other...
Series: ASM Desk Editions
Publisher: ASM International
Published: 01 December 1998
DOI: 10.31399/asm.hb.mhde2.a0003248
EISBN: 978-1-62708-199-3
... equal to the volume fraction, V V , as long as the sectioning plane intersects the structural features at random. Fig. 1 Synthetic microstructure of uniformly shaped, identical size spherical particles in a matrix phase. Test area is 12,100 mm 2 . Test lines, ten horizontal and ten vertical...
Series: ASM Handbook
Volume: 22A
Publisher: ASM International
Published: 01 December 2009
DOI: 10.31399/asm.hb.v22a.a0005415
EISBN: 978-1-62708-196-2
... elastic modulus, lattice parameters, and lattice correspondence between the precipitate and matrix phases. The molar volume is usually assumed to be constant or a linear function of solute concentrations, with a typical value of ∼10 −5 m 3 /mol. The gradient coefficient, κ m , can be determined by...
Series: ASM Handbook
Volume: 22A
Publisher: ASM International
Published: 01 December 2009
DOI: 10.31399/asm.hb.v22a.a0005406
EISBN: 978-1-62708-196-2
... mobility matrix. The different PF models differ in the particular formulation, but agree in general principle. The following formulation given in ( Ref 13 ) is used to find the particular form: (Eq 3a) Φ ˙ α = ∑ β μ α β { σ α β [ Φ β ∇ 2 Φ α − Φ α...
Series: ASM Handbook
Volume: 14A
Publisher: ASM International
Published: 01 January 2005
DOI: 10.31399/asm.hb.v14a.a0009002
EISBN: 978-1-62708-185-6
... from Taylor/Bishop-Hill models. Selective (i.e., faster) growth is then assumed to occur for nuclei of particular misorientations with respect to the matrix. The details of this approach have been reviewed ( Ref 53 ). Models incorporating oriented nucleation and selective growth have also been applied...
Series: ASM Handbook
Volume: 22A
Publisher: ASM International
Published: 01 December 2009
DOI: 10.31399/asm.hb.v22a.a0005459
EISBN: 978-1-62708-196-2
... disorientation of subboundaries arising from deformation incompatibility between neighboring grains or between the matrix and coarse particles. These phenomena seem to operate at a level of SFE that separates discontinuous and continuous behaviors ( Fig. 9 ). Fig. 9 Relative tendency of different metals...
Series: ASM Handbook
Volume: 22A
Publisher: ASM International
Published: 01 December 2009
DOI: 10.31399/asm.hb.v22a.a0005408
EISBN: 978-1-62708-196-2
... distributed more evenly, while decreasing temperatures during rolling together with plastic deformation may lead to further precipitation of phases from the supersaturated0020aluminum matrix. The alternating cycles of deformation and recrystallization during hot rolling have a strong impact on the overall...
Series: ASM Handbook
Volume: 13B
Publisher: ASM International
Published: 01 January 2005
DOI: 10.31399/asm.hb.v13b.a0003839
EISBN: 978-1-62708-183-2
... associated with MMC fabrication can cause accelerated corrosion of the metal matrix as compared to corrosion of the unreinforced matrix alloys. Accelerated corrosion may originate from electrochemical and chemical interaction between MMC constituents, microstructural effects, and from problems related to...
Book: Casting
Series: ASM Handbook
Volume: 15
Publisher: ASM International
Published: 01 December 2008
DOI: 10.31399/asm.hb.v15.a0005227
EISBN: 978-1-62708-187-0
... the matrix. There are several cast materials, such as aluminum-silicon alloys and cast irons, that exhibit two-phase microstructure in which the volume and shape of the phases are governed by phase equilibria and that have a long history of foundry production. Modern cast MMCs differ from these...
Book: Casting
Series: ASM Handbook
Volume: 15
Publisher: ASM International
Published: 01 December 2008
DOI: 10.31399/asm.hb.v15.a0005339
EISBN: 978-1-62708-187-0
... matrix. Such a microstructure may be called an in situ composite. Another example of an in situ composite commonly produced by foundries is ductile cast iron ( Fig. 1 ), in which graphite nodules are dispersed in a ferrite matrix. A limitation of composites such as the aluminum-silicon eutectic alloy and...
Series: ASM Desk Editions
Publisher: ASM International
Published: 01 November 1995
DOI: 10.31399/asm.hb.emde.a0003063
EISBN: 978-1-62708-200-6
... selecting the properties of both the reinforcement and matrix phases. Reinforcement properties to consider include mechanical behavior, crystallinity, morphology, microstructure, and surface characteristics. The other factor that enters into the performance of a composite is the presence of an interface...
Series: ASM Desk Editions
Publisher: ASM International
Published: 01 December 1998
DOI: 10.31399/asm.hb.mhde2.a0003163
EISBN: 978-1-62708-199-3
...-size tensile bars, aged at 177 °C (351 °F) for 5 h. (f) Test bars fractured before yielding. Source: Duralcan USA Fig. 3 Typical microstructure of an aluminum-matrix composite containing 20 vol% SiC. 125× Aluminum MMCs produced by stir casting are also commonly extruded. Wrought...
Series: ASM Desk Editions
Publisher: ASM International
Published: 01 November 1995
DOI: 10.31399/asm.hb.emde.a0003045
EISBN: 978-1-62708-200-6
... materials. The techniques can be used to characterize material discontinuities such as delaminations, cracks, voids, and matrix-rich pockets. It is also possible to visualize fiber orientation, measure changes in material thickness, and determine elastic and sonic properties. As already mentioned...
Series: ASM Handbook
Volume: 17
Publisher: ASM International
Published: 01 August 2018
DOI: 10.31399/asm.hb.v17.a0006478
EISBN: 978-1-62708-190-0
... Abstract This article introduces the principal methodologies and some advanced technologies that are being applied for nondestructive evaluation (NDE) of fiber-reinforced polymer-matrix composites. These include acoustic emission, ultrasonic, eddy-current, computed tomography, electromagnetic...
Series: ASM Desk Editions
Publisher: ASM International
Published: 01 December 1998
DOI: 10.31399/asm.hb.mhde2.a0003090
EISBN: 978-1-62708-199-3
... pearlitic microstructure; the machine housing has a ferrite plus pearlite matrix with graphite flakes; and the jaw crusher microstructure contains martensite and cementite. cast irons material selection mechanical properties microstructure steels THE PROPERTIES of irons and steels are linked...
Series: ASM Desk Editions
Publisher: ASM International
Published: 01 December 1998
DOI: 10.31399/asm.hb.mhde2.a0003252
EISBN: 978-1-62708-199-3
... precipitates produced during age hardening Determining orientation relationships between parent and product phases, matrix and twins, etc. Characterizing compositional gradients over very short distances, e.g., diffusion profiles associated with phase transformations Determining phase diagrams by...