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metallurgical constraints

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Series: ASM Handbook
Volume: 11A
Publisher: ASM International
Published: 30 August 2021
DOI: 10.31399/asm.hb.v11A.a0006838
EISBN: 978-1-62708-329-4
... that do not account for manufacturing constraints. However, another important factor is the lack of attention to the metallurgical characteristics in the design phase for a given material and AM process, even the specific AM machine. Two machines for the same metal AM process also may not produce...
Series: ASM Handbook
Volume: 24A
Publisher: ASM International
Published: 30 June 2023
DOI: 10.31399/asm.hb.v24A.a0006950
EISBN: 978-1-62708-439-0
..., for both the physics and manufacturing constraints being considered. Conversely, the forte of SDD is the more thorough, even if computationally expensive, analyses that make it amenable for the detailed design stage or even during the prototyping stage. Simulation-driven design is also commonly applied...
Series: ASM Handbook
Volume: 8
Publisher: ASM International
Published: 01 January 2000
DOI: 10.31399/asm.hb.v08.a0003305
EISBN: 978-1-62708-176-4
... by explaining the ductile-to-brittle fracture transition and by correlating KId, KIc, and Charpy V-notch impact energy absorptions. It highlights the effects of constraint, temperature, and loading rate on the fracture transition. The article discusses the applications of fracture mechanism in limiting...
Series: ASM Handbook
Volume: 1A
Publisher: ASM International
Published: 31 August 2017
DOI: 10.31399/asm.hb.v01a.a0006331
EISBN: 978-1-62708-179-5
... Abstract In cast iron, residual stresses normally arise due to hindered thermal contraction, meaning that they are associated with the presence of constraints that prevent the natural, free volumetric variation of the material upon solid-state cooling. This article explains their mechanism...
Series: ASM Handbook Archive
Volume: 11
Publisher: ASM International
Published: 01 January 2002
DOI: 10.31399/asm.hb.v11.a0003519
EISBN: 978-1-62708-180-1
... within a company and is an integral part of the quality assurance and continuous improvement programs. A proper failure investigation is not a “science project.” In addition, there is a distinct difference between a failure investigation and a metallurgical evaluation. A root-cause failure investigation...
Series: ASM Handbook
Volume: 13A
Publisher: ASM International
Published: 01 January 2003
DOI: 10.31399/asm.hb.v13a.a0003640
EISBN: 978-1-62708-182-5
..., metal composition and metallurgical conditions, test specimen preparation, and corrosion damage assessment. It describes a strategy for planning the design of controlled and uncontrolled factorial experiments. The article contains a table that lists the elements of an iterative process...
Series: ASM Handbook
Volume: 22A
Publisher: ASM International
Published: 01 December 2009
DOI: 10.31399/asm.hb.v22a.a0005427
EISBN: 978-1-62708-196-2
... Abstract Integrated computational materials engineering refers to the use of computer simulations that integrate mathematical models of complex metallurgical processes with computer models used in component and process design. This article outlines an example of a computer-aided engineering...
Book: Casting
Series: ASM Handbook
Volume: 15
Publisher: ASM International
Published: 01 December 2008
DOI: 10.31399/asm.hb.v15.a0005226
EISBN: 978-1-62708-187-0
..., and the formation of noncrystalline phases. It considers three factors to understand the fundamentals of these changes: heat flow, thermodynamic constraints/conditions at the liquid-solid interfaces, and diffusional kinetics/microsegregation. These factors are described in detail. casting microsegregation...
Book: Casting
Series: ASM Handbook
Volume: 15
Publisher: ASM International
Published: 01 December 2008
DOI: 10.31399/asm.hb.v15.a0009014
EISBN: 978-1-62708-187-0
... to temperature of the molten metal, fluid life also depends on chemical, metallurgical, and surface tension factors. Therefore, the fluid life of each alloy is different. For example, aluminum 356 is considered to have excellent fluid life whereas the fluid life of aluminum 206 is only fair to good. Fluid life...
Series: ASM Handbook
Volume: 19
Publisher: ASM International
Published: 01 January 1996
DOI: 10.31399/asm.hb.v19.a0002379
EISBN: 978-1-62708-193-1
...                  (matrix)                   (ductile phase)  where σ 0 is the flow stress, a 0 is the radius of ductile phase, G m is the energy release rate of the brittle matrix, and χ is a measure of microstructural constraint. A modified form for the above equation for the plane strain fracture...
Series: ASM Handbook
Volume: 5A
Publisher: ASM International
Published: 01 August 2013
DOI: 10.31399/asm.hb.v05a.a0005728
EISBN: 978-1-62708-171-9
... the load and not moving (high degree of metallurgical bonding or constraint of the surrounding splat network) By rotating about the metallurgical bond as the surrounding splat network allows (lower-density coatings, lower degree of metallurgical bonding) By deforming plastically and being translated...
Series: ASM Handbook
Volume: 22A
Publisher: ASM International
Published: 01 December 2009
DOI: 10.31399/asm.hb.v22a.a0005458
EISBN: 978-1-62708-196-2
... hydrostatic stress may arise from plastic constraint and lead to rapid dilatation of interfacial defects, followed by a slower growth rate due to reduced constraint as the voids expand further. In the remainder of this article, this broad understanding is elaborated. Early Concepts of Creep Cavitation...
Series: ASM Handbook Archive
Volume: 11
Publisher: ASM International
Published: 01 January 2002
DOI: 10.31399/asm.hb.v11.a0003538
EISBN: 978-1-62708-180-1
... conditions together with the constraint introduced by the presence of the imperfection (i.e., the stress-intensity, or K , field) Metallurgical structure These factors are described in the section “Fractures at or near Stress Raisers,” which is then followed by a root-cause failure analysis case...
Series: ASM Handbook
Volume: 11
Publisher: ASM International
Published: 15 January 2021
DOI: 10.31399/asm.hb.v11.a0006775
EISBN: 978-1-62708-295-2
... conditions together with the constraint introduced by the presence of the imperfection (i.e., the stress-intensity, or K , field) Metallurgical structure These factors are described later in this article, followed by a root-cause failure analysis case history to illustrate some...
Series: ASM Handbook
Volume: 6A
Publisher: ASM International
Published: 31 October 2011
DOI: 10.31399/asm.hb.v06a.a0005632
EISBN: 978-1-62708-174-0
..., and purity. Substrate material considerations include degree of dilution, metallurgical compatibility, cleanliness, and other heat-sinking (thermal) or mechanical constraints that could lead to undesirable characteristics of the deposited material. Future Directions for Near-Net Shape Processing...
Series: ASM Handbook
Volume: 6
Publisher: ASM International
Published: 01 January 1993
DOI: 10.31399/asm.hb.v06.a0001479
EISBN: 978-1-62708-173-3
... suitable for a specific application, any solder that is chosen must be able to form a metallurgical bond with the materials to be joined. Energy, which is usually applied in the form of heat, is required to bond the solder to the surfaces to be joined. Methods of applying heat include convection...
Series: ASM Handbook
Volume: 11A
Publisher: ASM International
Published: 30 August 2021
DOI: 10.31399/asm.hb.v11A.a0006815
EISBN: 978-1-62708-329-4
... specifications and hardware analyses. Those specifications and analyses (in this example, the creep life requirement and subsequent metal temperature limits) result in additional constraints for evaluating hardware beyond what is discovered in the metallurgical laboratory. Preliminary Investigation When...
Series: ASM Handbook
Volume: 6
Publisher: ASM International
Published: 01 January 1993
DOI: 10.31399/asm.hb.v06.a0001465
EISBN: 978-1-62708-173-3
... of a few minutes on board the Space Shuttle. This power constraint will be present for the foreseeable future. Larger-capacity generation systems based on thermal-nuclear generators are being developed, but have not yet been used in service with manned spacecraft. A second problem is the lack...
Series: ASM Handbook
Volume: 1
Publisher: ASM International
Published: 01 January 1990
DOI: 10.31399/asm.hb.v01.a0001008
EISBN: 978-1-62708-161-0
... deformed because of the constraints created by maintaining an unrotated and undistorted habit plane within the bulk austenite ( Ref 2 , 21 ). The deformation of the martensite is referred to as the lattice invariant deformation, and it produces a high density of dislocations or twins in martensite...
Series: ASM Handbook Archive
Volume: 11
Publisher: ASM International
Published: 01 January 2002
DOI: 10.31399/asm.hb.v11.a0003537
EISBN: 978-1-62708-180-1
... propagation direction parallel to shear lips Mixed-mode fracture (incomplete constraint) Tightly closed crack on surface Possible cyclic loading Possible processing imperfection, e.g., from shot peening, quench cracks Radial marks and chevrons (v-shape) Point toward crack initiation...