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selective laser sintering

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Book Chapter

Series: ASM Technical Books
Publisher: ASM International
Published: 01 December 1995
DOI: 10.31399/asm.tb.sch6.t68200133
EISBN: 978-1-62708-354-6
... in the metal casting field are Laminated Object Manufacturing (LOM) ( Figures 8-3 and 8-4 ), Fused Deposition Modeling (FDM), Stereolithography (SLA) ( Figure 8-5 ) and Selective Laser Sintering Process (SLS) ( Figures 8-6 and 8-7 ). These processes enable the building of complex, three-dimensional models...
Book Chapter

Series: ASM Technical Books
Publisher: ASM International
Published: 01 February 2022
DOI: 10.31399/asm.tb.mbheaktmse.t56030001
EISBN: 978-1-62708-418-5
.... Another method of fabricating bulk HEAs is by additive manufacturing (AM) ( Ref 78 , 79 ). Recently, scientists fabricated HEAs by selective laser melting ( Ref 80 ), directed energy deposition ( Ref 81 ), electron beam melting ( Ref 82 ), binder jetting ( Ref 83 ), three-dimensional (3D) ink-extrusion...
Book Chapter

Series: ASM Technical Books
Publisher: ASM International
Published: 01 March 2001
DOI: 10.31399/asm.tb.secwr.t68350183
EISBN: 978-1-62708-315-7
... in the materials selection process is material availability and delivery time. This is especially true if a person/company has only a limited time for completing a part. Even without time constraints, materials engineers tend to use materials that are readily available. Similarly, the choice of a surface...
Series: ASM Technical Books
Publisher: ASM International
Published: 30 April 2020
DOI: 10.31399/asm.tb.bpapp.t59290251
EISBN: 978-1-62708-319-5
... are added to the powder-binder formulation. The fibers are selected to add strength after sintering. Demonstrations of aligned-fiber composites include matrix phases of alumina, silicon nitride, stainless steel, and intermetallic compounds. Two images in Fig. 11.2 illustrate alignment. Figure 11.2...
Book Chapter

Series: ASM Technical Books
Publisher: ASM International
Published: 30 April 2020
DOI: 10.31399/asm.tb.bpapp.t59290067
EISBN: 978-1-62708-319-5
... backbone. Table 4.6 provides example formulations. The systems may involve exotic constituents, such as tetraethylammonium bromide dispersed in toluene and water. Some of the inks contain nanoscale particles. These small particles sinter under rapid heating conditions from laser or other light sources...
Book Chapter

Series: ASM Technical Books
Publisher: ASM International
Published: 01 June 2007
DOI: 10.31399/asm.tb.pmsspmp.t52000167
EISBN: 978-1-62708-312-6
... vary significantly, depending on the alloy composition and sintering parameters. Selection of optimal material and processing parameters can go a long way in controlling the cost of machining. In some situations, the choices may be limited, with the result that the cost of machining is a significant...
Series: ASM Technical Books
Publisher: ASM International
Published: 01 June 2007
DOI: 10.31399/asm.tb.pmsspmp.t52000131
EISBN: 978-1-62708-312-6
... a temperature range of 0 to 1000 °C (32 to 1832 °F). Thermal Diffusivity and Conductivity Using a laser flash method, Beiss et al. ( Ref 22 ) determined the thermal diffusivity of 316L sintered in hydrogen and in 30% H 2 -70% N 2 atmospheres over a temperature range of 0 to 800 °C (32 to 1472 °F...
Series: ASM Technical Books
Publisher: ASM International
Published: 30 April 2020
DOI: 10.31399/asm.tb.bpapp.t59290169
EISBN: 978-1-62708-319-5
... cycles are defined by adjustable parameters of heating rate, peak temperature, hold time, and process atmosphere. The hold time at the sintering temperature ranges from a few minutes to a few hours. Atmosphere selection is guided by the material chemistry, and peak temperature tracks with the material...
Series: ASM Technical Books
Publisher: ASM International
Published: 01 March 2001
DOI: 10.31399/asm.tb.secwr.t68350001
EISBN: 978-1-62708-315-7
...-, induction-, electron beam-, or laser-hardened steels. More details on these surface-engineering techniques can be found in Chapters 5 through 8 in this book. Material/Process Selection <xref rid="t68350001-ref10" ref-type="bibr">(Ref 10)</xref> Faced with the wide range of possibilities...
Book Chapter

Series: ASM Technical Books
Publisher: ASM International
Published: 30 April 2020
DOI: 10.31399/asm.tb.bpapp.t59290009
EISBN: 978-1-62708-319-5
... to deagglomerate the particles. Powder characteristics depend on the synthesis route, chemistry, and impurities. Generally, the powders employed in binder-assisted processes are small to enable sintering, typically from 0.1 to 100 μm. The cost of powder varies considerably, so the selection of a fabrication route...
Book Chapter

Series: ASM Technical Books
Publisher: ASM International
Published: 30 April 2020
DOI: 10.31399/asm.tb.bpapp.t59290111
EISBN: 978-1-62708-319-5
... a layer of particles is energized sufficiently to sinter by using a high-power laser. Progressive layers and scanning build the three-dimensional object in small layers. In addition to lasers, electron beams and electric arcs are options for effectively sintering or melting the particles in place...
Book Chapter

Series: ASM Technical Books
Publisher: ASM International
Published: 01 March 2002
DOI: 10.31399/asm.tb.stg2.t61280079
EISBN: 978-1-62708-267-9
... to significant cost and lead-time reduction for development hardware. Processes such as stereolithography, selective laser sintering, and other three-dimensional (3-D) printing technology can provide casting patterns without the use of costly conventional wax or ceramic injection dies. Special machines can take...
Book Chapter

Series: ASM Technical Books
Publisher: ASM International
Published: 01 October 2012
DOI: 10.31399/asm.tb.lmub.t53550511
EISBN: 978-1-62708-307-2
... zirconia polycrystalline (Y-TZP). It also provides information on materials selection, design optimization, and joining methods, and covers every step of the ceramic production process. brazing ceramic processing diffusion bonding structural ceramics toughened ceramics weibull analysis...
Series: ASM Technical Books
Publisher: ASM International
Published: 01 December 2000
DOI: 10.31399/asm.tb.ttg2.t61120131
EISBN: 978-1-62708-269-3
... with advanced rapid prototyping methods to directly manufacture three-dimensional components. The approach is similar to rapid prototyping techniques, such as stereolithography and selective laser sintering. However, it is different in that a fully dense, high-integrity part is claimed to be made without...
Book Chapter

Series: ASM Technical Books
Publisher: ASM International
Published: 30 April 2020
DOI: 10.31399/asm.tb.bpapp.t59290139
EISBN: 978-1-62708-319-5
... captures condensable species, while a natural gas burn-off flame combusts lower-molecular-weight vapor species. Cycles for such units are approximately 8 to 16 h. Peak temperatures are selected to ensure some insipient sintering for handling strength, usually over 600 °C (1110 °F). Fig. 7.19 Outline...
Series: ASM Technical Books
Publisher: ASM International
Published: 01 October 2011
DOI: 10.31399/asm.tb.mnm2.t53060117
EISBN: 978-1-62708-261-7
... for a given product. An important aspect of process selection is the required part tolerance, or the degree of deviation that can be accepted from the ideal or nominal dimensions. Each manufacturing process has the capability of producing a part within a certain range of measurable dimensional tolerance...
Series: ASM Technical Books
Publisher: ASM International
Published: 30 April 2020
DOI: 10.31399/asm.tb.bpapp.t59290201
EISBN: 978-1-62708-319-5
... Abstract This chapter provides details on powder-binder processing for three materials, namely precipitation-hardened 17-4 PH stainless steel, cemented carbides, and alumina. The types of powders, binders, feedstock, shaping processes, debinding, sintering cycles, compositions, microstructure...
Series: ASM Technical Books
Publisher: ASM International
Published: 01 March 2001
DOI: 10.31399/asm.tb.secwr.t68350195
EISBN: 978-1-62708-315-7
... Abstract This chapter provides helpful guidelines for selecting a surface treatment for a given application. It identifies important design factors and applicable treatments for common design scenarios, materials, and operating conditions. It explains why heat treatments and finishing...
Series: ASM Technical Books
Publisher: ASM International
Published: 01 February 2005
DOI: 10.31399/asm.tb.chffa.t51040277
EISBN: 978-1-62708-300-3
... Abstract This chapter discusses the factors that affect die steel selection for hot forging, including material properties such as hardenability, heat and wear resistance, toughness, and resistance to plastic deformation and mechanical fatigue. It then describes the relative merits of various...
Series: ASM Technical Books
Publisher: ASM International
Published: 01 September 2005
DOI: 10.31399/asm.tb.gmpm.t51250001
EISBN: 978-1-62708-345-4
... with a review of some of the terms used in the gear industry to describe the design of gears and gear geometries. It then discusses the types of gears that operate on parallel shafts, intersecting shafts, and nonparallel and nonintersecting shafts. Next, the processes involved in the selection of gear...