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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 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...
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
... performance and failure during processing continue to be challenging tasks. The metalworking industry has, by and large, depended on cumulative and long practical experience rather than on the continuous reporting of research findings in the technical literature. A notable exception is the automotive industry...
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 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...
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
... with numbers representing constant efficiency of power dissipation. Source: Ref 25 Fig. 27 Schematic of constitutive relation of material system as energy converter (dissipator). (a) Material system as nonlinear (general case) energy dissipator. (b) Material system as linear (special case...
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
... metalworking. These defects can be classified as external defects, internal defects, and dimensional defects. 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...
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 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...
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
... of Workability and Process Design , ASM International , 2003 , p 316 – 321 22. Chaudhary A. and Vaze S. , Design Optimization for Dies and Preforms , Metalworking: Bulk Forming , Vol 14A , ASM Handbook , ASM International , 2005 , p 640 – 644 23. Backofen W.A. , Some...
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
... soap Graphite and molybdenum disulfide suspension EP, extreme-pressure Commonly Used Sheet Metalworking Lubricants and Typical μm Values Table 5 Commonly Used Sheet Metalworking Lubricants and Typical μm Values Lubricants are listed according to increasing severity of conditions...
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
... and the m value is revealed in the data collected by Woodford ( Ref 18 ) shown in Fig. 16 . In addition, a number of theoretical analyses have been conducted to relate m and tensile failure strain, ε f ( Ref 19 , Ref 22 , Ref 21 ). For example, Ghosh...
Series: ASM Handbook
Volume: 14A
Publisher: ASM International
Published: 01 January 2005
DOI: 10.31399/asm.hb.v14a.a0004017
EISBN: 978-1-62708-185-6
... map with numbers representing constant efficiency of power dissipation. Source: Ref 41 Fig. 40 Schematic of constitutive relation of material system as an energy converter (dissipator). (a) Material system as nonlinear energy dissipator (general case). (b) Material system as linear...
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: 14A
Publisher: ASM International
Published: 01 January 2005
DOI: 10.31399/asm.hb.v14a.a0009013
EISBN: 978-1-62708-185-6
... of tensile stresses at the center of the ingot. Damage seen is directly related to the tensile stresses. Fig. 15 Model showing damage values corresponding to the process used to manufacture the part shown in Fig. 14 Fig. 16 Model showing damage values obtained after modification...
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
...Torsional rotation rates corresponding to various metalworking operations Table 1 Torsional rotation rates corresponding to various metalworking operations Operation von Mises effective strain rate ( ε ¯ ˙ ) (a) ,s −1 Corresponding surface shear strain rate in torsion...
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
... or solidus temperature), workability problems change from failure related largely to intergranular cracking and cavitation to failure by a mode involving transgranular ductile fracture or shear banding. Workability tests used to diagnose these problems are discussed in turn. Workability Tests for Ductile...
Series: ASM Handbook
Volume: 8
Publisher: ASM International
Published: 01 January 2000
DOI: 10.31399/asm.hb.v08.a0003263
EISBN: 978-1-62708-176-4
... metalworking operations, steady-state deformation may not be achieved because temperatures and plastic strains may be too low. Flow stress then depends upon strain, strain rate, and temperature. In these situations, a general constitutive relation of the form: (Eq 77) σ ¯ [ B ε ¯ n...
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
... of Al, Cu and a-Fe , Acta Met. , Vol 32 , 1984 , p 2077 – 2089 10.1016/0001-6160(84)90187-1 18. Montheillet F. , Gilormini P. , and Jonas J.J. , Relation between Axial Stresses and Texture Development during Torsion Testing , Acta Met. , Vol 33 , 1985 , p 705 10.1016...
Series: ASM Handbook
Volume: 18
Publisher: ASM International
Published: 31 December 2017
DOI: 10.31399/asm.hb.v18.a0006370
EISBN: 978-1-62708-192-4
... distribution; thus, metalworking simulation is a coupled plasticity and heat transfer problem. Simulation of metal forming has become essential for a number of reasons, including elimination of workpiece defects, selection of proper equipment, and proper design of tooling. Tooling design is an extremely...
Series: ASM Handbook
Volume: 22B
Publisher: ASM International
Published: 01 November 2010
DOI: 10.31399/asm.hb.v22b.a0005539
EISBN: 978-1-62708-197-9
...-transfer model hot forging material selection microstructural model optimization design stress analysis METALWORKING, with its thousands of years of history, is one of the oldest and most important materials processing technologies. During the last 30 years, with the continuous improvement...
Series: ASM Handbook
Volume: 14A
Publisher: ASM International
Published: 01 January 2005
DOI: 10.31399/asm.hb.v14a.a0004021
EISBN: 978-1-62708-185-6
... with the location of the low-cycle fatigue fracture. Fig. 56 The component stresses were evaluated on the original design to isolate the root cause of the failure. The dark colors represent tension and the light colors compression. Hoop and radial stresses (light color) are essentially compressive...
Series: ASM Handbook
Volume: 22A
Publisher: ASM International
Published: 01 December 2009
DOI: 10.31399/asm.hb.v22a.a0005431
EISBN: 978-1-62708-196-2
... H.A. , A New Fracture Criterion for Fracture Prediction in Metalworking Processes , Concurrent Engineering Approach to Materials Processing , Dwivedi S.N. , Paul A.J. , and Dax F.R , Ed., TMS , 1992 , p 107 – 119 9. Bandstra J.P. , “3D Extension of Kuhn Surface...