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Metalworking-related failures

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Series: ASM Handbook Archive
Volume: 11
Publisher: ASM International
Published: 01 January 2002
DOI: 10.31399/asm.hb.v11.a0003507
EISBN: 978-1-62708-180-1
... Abstract This article describes the general root causes of failure associated with wrought metals and metalworking. This includes a brief review of the discontinuities or imperfections that may be the common sources of failure-inducing defects in bulk working of wrought products. The article...
Series: ASM Handbook
Volume: 8
Publisher: ASM International
Published: 01 January 2000
DOI: 10.31399/asm.hb.v08.a0003258
EISBN: 978-1-62708-176-4
... to predict their behavior in metalworking operations. Because of the generally complex nature of the processes involved, the identification and quantification of appropriate parameters to predict performance and failure during processing continue to be challenging tasks. The metalworking industry has...
Series: ASM Handbook
Volume: 11A
Publisher: ASM International
Published: 30 August 2021
DOI: 10.31399/asm.hb.v11A.a0006835
EISBN: 978-1-62708-329-4
.... discontinuities hot forming ingot casting metalworking defects nonferrous forging steel forging wrought metal products Introduction to Failures Related to Hot Forming Processes Wrought forms are produced by a wide variety of metalworking operations that can be roughly divided into bulk-working...
Series: ASM Handbook
Volume: 11A
Publisher: ASM International
Published: 30 August 2021
DOI: 10.31399/asm.hb.v11A.a0006826
EISBN: 978-1-62708-329-4
.... , Zalensas D. , Ed., American Foundry Society , Des Plaines, IL , 1993 , p 343 27. Failures Related to Metalworking , Failure Analysis and Prevention , Vol 11 , ASM Handbook , ASM International , Materials Park, OH , 2002 , p 83–84 , 92, 94, 96–97, 102 10.31399/asm.hb.v11.a0003507...
Series: ASM Handbook
Volume: 9
Publisher: ASM International
Published: 01 December 2004
DOI: 10.31399/asm.hb.v09.a0003790
EISBN: 978-1-62708-177-1
... the remainder. Source: Ref 7 Magnesium Alloys Although numerous magnesium casting alloys have wide freezing ranges, reported research related to magnesium semisolid metalworking focuses on either AZ91D or AM60B. The chemical compositions of additional magnesium die-casting alloys are presented...
Series: ASM Handbook
Volume: 14A
Publisher: ASM International
Published: 01 January 2005
DOI: 10.31399/asm.hb.v14a.a0003971
EISBN: 978-1-62708-185-6
... Abstract Metalworking is one of the three major technologies used to fabricate metal products. This article tabulates the classification of metal forming processes. It discusses different types of metalworking equipment, including rolling mills, ring-rolling machines, and thread-rolling...
Series: ASM Handbook
Volume: 8
Publisher: ASM International
Published: 01 January 2000
DOI: 10.31399/asm.hb.v08.a0003293
EISBN: 978-1-62708-176-4
... Abstract High strain rate testing is important for many engineering structural applications and metalworking operations. This article describes various methods for high strain rate testing. Several methods have been developed, starting with the pioneering work of John Hopkinson and his son...
Series: ASM Handbook
Volume: 14A
Publisher: ASM International
Published: 01 January 2005
DOI: 10.31399/asm.hb.v14a.a0009003
EISBN: 978-1-62708-185-6
... deformation before fracture (ductility). Therefore, a complete description of the workability of a material is specified by its flow stress dependence on processing variables (for example, strain, strain rate, preheat temperature, and die temperature), its failure behavior, and the metallurgical...
Series: ASM Handbook
Volume: 14B
Publisher: ASM International
Published: 01 January 2006
DOI: 10.31399/asm.hb.v14b.a0005159
EISBN: 978-1-62708-186-3
... with lubricant selection as influenced by the metal to be formed and particular sheet-metal forming operations. Some aspects of microbiology and toxicity also are discussed, as are the increasingly important health and economic implications of laws and regulations dealing with metalworking lubrication. Economic...
Series: ASM Handbook
Volume: 14A
Publisher: ASM International
Published: 01 January 2005
DOI: 10.31399/asm.hb.v14a.a0009010
EISBN: 978-1-62708-185-6
... what processing parameters should be selected in order to produce high-quality products. Although commercial metalworking operations cannot be analyzed in terms of a simple stress state, workpiece failures are caused by localized tensile stresses in most instances ( Ref 1 , Ref 2 , Ref 3 , Ref 4...
Series: ASM Desk Editions
Publisher: ASM International
Published: 01 December 1998
DOI: 10.31399/asm.hb.mhde2.a0005721
EISBN: 978-1-62708-199-3
... Abstract This article is a compilation of definitions for terms related to engineering materials. engineering materials THIS GLOSSARY contains the definitions of some 3500 technical terms encountered in the metallurgical literature. The list includes terms from: general materials...
Series: ASM Handbook
Volume: 22A
Publisher: ASM International
Published: 01 December 2009
DOI: 10.31399/asm.hb.v22a.a0005461
EISBN: 978-1-62708-196-2
... further understood that tensile stresses, or better yet, hydrostatic tension, played a strong role in fracture during metalworking processes. Pioneering work by Bridgman ( Ref 3 ) during WWII showed that deforming materials under high superimposed hydrostatic pressure dramatically enhanced their ductility...
Series: ASM Handbook Archive
Volume: 11
Publisher: ASM International
Published: 01 January 2002
DOI: 10.31399/asm.hb.v11.a0003500
EISBN: 978-1-62708-180-1
... of problems cannot be developed without identification of the root cause. Failure Definitions In the general sense of the word, a failure is defined as an undesirable event or condition. For the purposes of discussion related to failure analysis and prevention, it is a general term used to imply...
Series: ASM Handbook
Volume: 14A
Publisher: ASM International
Published: 01 January 2005
DOI: 10.31399/asm.hb.v14a.a0009011
EISBN: 978-1-62708-185-6
... temperature gradients during torsion testing, as in conventional metalworking processes, and can cause noticeable flow localization in materials with flow stresses that are strongly temperature dependent. Because failure mode and microstructural development depend on process variables, torsion-testing...
Series: ASM Handbook
Volume: 11A
Publisher: ASM International
Published: 30 August 2021
DOI: 10.31399/asm.hb.v11A.9781627083294
EISBN: 978-1-62708-329-4
Series: ASM Handbook
Volume: 8
Publisher: ASM International
Published: 01 January 2000
DOI: 10.31399/asm.hb.v08.a0003269
EISBN: 978-1-62708-176-4
... may be used, then, to test the shear strength of interfaces along the bending axis. At the same time, failure of the bottom fibers in the beam due to tensile stress must be prevented. For this reason, the length-to-height ratio of the beam has an upper limit given by: (Eq 2) L / h < 0.5...
Series: ASM Handbook
Volume: 14A
Publisher: ASM International
Published: 01 January 2005
DOI: 10.31399/asm.hb.v14a.a0009012
EISBN: 978-1-62708-185-6
... A, which was directly related to the increased alloying content. No difference in strain to failure was discerned. Subsequent extrusion of 7 xxx B at 315 °C (600 °F) did indeed stall the press. Successful extrusion was conducted at higher temperatures. Fig. 6 Flow stress for two versions of a 7xxx...
Series: ASM Handbook
Volume: 11
Publisher: ASM International
Published: 15 January 2021
DOI: 10.31399/asm.hb.v11.a0006753
EISBN: 978-1-62708-295-2
... related to failure analysis and prevention, it is a general term used to imply that a component is unable to adequately perform its intended function. Thus, the intended function of a component and therefore the definition of failure may range greatly. For instance, discoloration of an architectural...
Series: ASM Handbook
Volume: 14A
Publisher: ASM International
Published: 01 January 2005
DOI: 10.31399/asm.hb.v14a.a0009013
EISBN: 978-1-62708-185-6
.... To get information about a specific thermomechanical process, the testing must resemble the process. Table 1 highlights how different processes correspond to various types of mechanical tests. The state of stress experienced during the actual metalworking operation should be present during the test...
Series: ASM Handbook
Volume: 14A
Publisher: ASM International
Published: 01 January 2005
DOI: 10.31399/asm.hb.v14a.a0009005
EISBN: 978-1-62708-185-6
... that is helpful in devising different types of workability tests for open-die forging. This consists of two classes of workability problems: those related to fracture-controlled failure and those related to flow-localization-controlled failure. The first group comprises hot shortness, triple-point cracking...