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distortion control

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Series: ASM Handbook Archive
Volume: 11
Publisher: ASM International
Published: 01 January 2002
DOI: 10.31399/asm.hb.v11.a0003510
EISBN: 978-1-62708-180-1
... Abstract This article provides an overview of the effects of various material- and process-related parameters on residual stress, distortion control, cracking, and microstructure/property relationships as they relate to various types of failure. It discusses phase transformations that occur...
Series: ASM Failure Analysis Case Histories
Publisher: ASM International
Published: 01 June 2019
DOI: 10.31399/asm.fach.process.c0092148
EISBN: 978-1-62708-235-8
... retained austenite in the failed cylinder to transform to martensite. The increase in volume resulted in sufficient size distortion to cause interference between the cylinder and the spool, seizing, and loss of flow control. The failed parts had been carburized in a process in which the carbon potential...
Series: ASM Failure Analysis Case Histories
Publisher: ASM International
Published: 01 June 2019
DOI: 10.31399/asm.fach.process.c0089738
EISBN: 978-1-62708-235-8
... manufacturing the doubler collar so that it could be placed in intimate contact with the header duct, and a revised weld procedure was recommended to result in a smaller, controlled, homogeneous weld joint with less distortion. Heat exchanger tubes Inlet headers Stress concentration Undercutting...
Series: ASM Handbook Archive
Volume: 11
Publisher: ASM International
Published: 01 January 2002
DOI: 10.31399/asm.hb.v11.a0003573
EISBN: 978-1-62708-180-1
... of the slat track. Corrective Measures Steps were taken to improve control of temperature of parts during austenitization. Warpage and Residual Stress Effects Warpage during heat treatment or during stress-relief annealing is also a common type of distortion failure. Warpage can result from...
Series: ASM Handbook
Volume: 11
Publisher: ASM International
Published: 15 January 2021
DOI: 10.31399/asm.hb.v11.a0006797
EISBN: 978-1-62708-295-2
...-distortion failure because of a change in modulus, as may occur in a control device where accuracy depends on a predictable elastic deflection of a control element or a sensing element. For most structural materials, the curve defining the temperature dependence of elastic and plastic properties...
Series: ASM Failure Analysis Case Histories
Publisher: ASM International
Published: 01 June 2019
DOI: 10.31399/asm.fach.modes.c0092131
EISBN: 978-1-62708-234-1
... spring and an outer spring (both of patented and drawn high-carbon steel wire) taken from another cylinder in the same engine were examined in the laboratory to determine why one had distorted and the other had not. Investigation (visual inspection, microstructure examination, and hardness testing...
Series: ASM Handbook
Volume: 11A
Publisher: ASM International
Published: 30 August 2021
DOI: 10.31399/asm.hb.v11A.a0006816
EISBN: 978-1-62708-329-4
... cracking Transformation-induced stresses Transformation from austenite to martensite causes volume change. Increases in volume increase tendency toward distortion and cracking Controlled only by controlling carbon content, where: Δ V V × 100 = 1.68 ( 100 − V c...
Series: ASM Failure Analysis Case Histories
Publisher: ASM International
Published: 01 June 2019
DOI: 10.31399/asm.fach.modes.c0046414
EISBN: 978-1-62708-234-1
... quantities of air were being drawn into the system when water in the supply tank dropped below a certain level. It was concluded that cavitation erosion (due to the uptake of air) caused metal removal and microstructural damage in the impellers. Recommendations included adding a water-level control...
Series: ASM Failure Analysis Case Histories
Volume: 3
Publisher: ASM International
Published: 01 December 2019
DOI: 10.31399/asm.fach.v03.c9001811
EISBN: 978-1-62708-241-9
... the stresses may distort the structure of the material [ 3 ]. This localized distortion of the structure disturbs the magnetic behavior of the material, and consequently, the eddy current response varied from point to point in the presence of residual stresses. The eddy current response of the specimens...
Series: ASM Handbook Archive
Volume: 11
Publisher: ASM International
Published: 01 January 2002
DOI: 10.31399/asm.hb.v11.a0003521
EISBN: 978-1-62708-180-1
... overload Brittle overload Fatigue Corrosion Wear Creep Visual, 1 to 50× (fracture surface) Necking or distortion in direction consistent with applied loads Dull, fibrous fracture Shear lips Little or no distortion Flat fracture Bright or coarse texture, crystalline, grainy...
Series: ASM Handbook
Volume: 11
Publisher: ASM International
Published: 15 January 2021
DOI: 10.31399/asm.hb.v11.a0006756
EISBN: 978-1-62708-295-2
... Fatigue Corrosion Wear Creep Visual (fracture surface): Mag: 1 to 50× Necking or distortion in direction consistent with applied loads Dull, fibrous fracture Shear lips Little or no distortion Flat fracture Bright or coarse texture, crystalline, grainy Rays or chevrons...
Series: ASM Failure Analysis Case Histories
Volume: 2
Publisher: ASM International
Published: 01 December 1993
DOI: 10.31399/asm.fach.v02.c9001274
EISBN: 978-1-62708-215-0
... (husband) Cooked per manufacturer instructions. No problems encountered. 3 Purchased by investigator for test Overcooked 10 min (b) . Handles partially distorted by deliberate forceful bending at cooking temperature. 4 Same as tray 3 Same as tray 3. 5 Same as tray 3 Overcooked 10 min (b...
Series: ASM Handbook Archive
Volume: 11
Publisher: ASM International
Published: 01 January 2002
DOI: 10.31399/asm.hb.v11.a0001821
EISBN: 978-1-62708-180-1
... Abstract This article illustrates the defects, which result because of poor-quality welds in the bridge components. The cracks resulting from the use of low fatigue strength details are also discussed. The article describes the effect of out-of-plane distortion in floor-beam-girder connection...
Series: ASM Failure Analysis Case Histories
Publisher: ASM International
Published: 01 June 2019
DOI: 10.31399/asm.fach.process.c9001581
EISBN: 978-1-62708-235-8
... Abstract A heavily worked 304 stainless steel wire basket recrystallized and distorted while in service at 650 deg C (1200 deg F). This case study demonstrates that heavily cold worked austenitic stainless steel components can experience large losses in creep strength, and potentially...
Series: ASM Failure Analysis Case Histories
Volume: 1
Publisher: ASM International
Published: 01 December 1992
DOI: 10.31399/asm.fach.v01.c9001028
EISBN: 978-1-62708-214-3
... characteristics indicated that the fatigue would not have occurred if the initial damage had not taken place. References References 1. Barsom J. and Rolfe , in Fracture and Fatigue Control in Structures , Prentice-Hall , 1987 , Chap 2.3. 2. Metals Handbook , 9th ed. , Vol 11...
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
..., and material, which are discussed in the following sections along with examples. The tools available for failure analysis are then covered. Further, the article describes the categories of mode of failure: distortion or undesired deformation, fracture, corrosion, and wear. It provides information...
Series: ASM Handbook
Volume: 11A
Publisher: ASM International
Published: 30 August 2021
DOI: 10.31399/asm.hb.v11A.a0006804
EISBN: 978-1-62708-329-4
... distortions stemmed from the blast and what is attributed to fire and heat damage. Figure 1 shows an engineer evaluating a postincident event that involved an explosion and a fire. This article addresses the effects of damage to equipment due to explosions (blast), fire, and heat as well...
Series: ASM Failure Analysis Case Histories
Publisher: ASM International
Published: 01 June 2019
DOI: 10.31399/asm.fach.modes.c9001734
EISBN: 978-1-62708-234-1
... from the center of the fracture, the grains were less distorted and grain boundary melting could be seen between some grains. A small number of grains in the same general area had spots, but no conclusions could be drawn due to the small size and lack of sharp definition. In the outer regions...
Series: ASM Failure Analysis Case Histories
Publisher: ASM International
Published: 01 June 2019
DOI: 10.31399/asm.fach.conag.c0092155
EISBN: 978-1-62708-221-1
... of the specified surface hardness of 58 HRC. Ferrite Gear boxes Nitriding 4140 UNS G41400 Heat treating-related failures (Other, general, or unspecified) distortion Slipping of components in the left-side final drive train of a tracked military vehicle was detected after the vehicle had been...
Series: ASM Failure Analysis Case Histories
Publisher: ASM International
Published: 01 June 2019
DOI: 10.31399/asm.fach.process.c0048733
EISBN: 978-1-62708-235-8
... and to develop corrective measures to minimize future failures. Service History The steam supplied to the plant was normally controlled at 517-kPa (75-psi) line pressure. For the first 18 months of service, the brine heater operated at a maximum temperature of 120 °C (250 °F) and a steam temperature...