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Series: ASM Failure Analysis Case Histories
Volume: 3
Publisher: ASM International
Published: 01 December 2019
DOI: 10.31399/asm.fach.v03.c9001845
EISBN: 978-1-62708-241-9
...Abstract Abstract Two clamps that support overhead power lines in an electrified rail system fractured within six months of being installed. The clamps are made of CuNiSi alloy, a type of precipitation-strengthening nickel-silicon bronze. To identify the root cause of failure, the rail operator...
Series: ASM Failure Analysis Case Histories
Publisher: ASM International
Published: 01 June 2019
DOI: 10.31399/asm.fach.aero.c0048616
EISBN: 978-1-62708-217-4
..., the material was changed to A-286, which is less susceptible to carbide precipitation. The bolt is strengthened by shot peening and rolling the threads after heat treatment. Avoiding temperatures in the sensitizing range is desirable, but difficult to ensure because of the application. Bolts Bolts...
Series: ASM Failure Analysis Case Histories
Publisher: ASM International
Published: 01 June 2019
DOI: 10.31399/asm.fach.modes.c9001152
EISBN: 978-1-62708-234-1
...-alloyed steel with 39 kg/sq mm tensile strength, which had been strengthened by welding plate strips on both sides had fractured in service; an axle tube out of 40 Mn 4 after DIN 17 200 from a paper fabrication machine, which had three short longitudinal slits distributed uniformly over its surface...
Series: ASM Failure Analysis Case Histories
Publisher: ASM International
Published: 01 June 2019
DOI: 10.31399/asm.fach.mech.c9001158
EISBN: 978-1-62708-225-9
... of major defects and was of high purity, although a number of minor surface defects such as rolling laps were found. The spring was heat treated and its surface strengthened by shot-peening, but the surface was also decarburized to a depth of approximately 0.03 mm which resulted in a lowering...
Series: ASM Failure Analysis Case Histories
Publisher: ASM International
Published: 01 June 2019
DOI: 10.31399/asm.fach.process.c9001190
EISBN: 978-1-62708-235-8
... at temperatures between 230 and 300 deg C after rolling the threads. This procedure would have reduced the internal stresses while maintaining strengthening gained by the cold deformation. Couplings Pipe Stress cracking Ms 63 Metalworking-related failures Intergranular fracture The brass pipe...
Series: ASM Failure Analysis Case Histories
Volume: 1
Publisher: ASM International
Published: 01 December 1992
DOI: 10.31399/asm.fach.v01.c9001126
EISBN: 978-1-62708-214-3
... ( 1 4 in.) heat-strengthened, gray-tinted glass intended for installation with a backup wall. The specified glass product has a transparent metallic oxide coating on the outer surface and a solid color ceramic frit on the back surface. The installed glass differed from the specifications...
Series: ASM Handbook Archive
Volume: 11
Publisher: ASM International
Published: 01 January 2002
DOI: 10.31399/asm.hb.v11.a0003545
EISBN: 978-1-62708-180-1
... superalloys 775–925 0.45–0.60 Burner cans for gas turbine engines Oxide dispersion-strengthened nickel-base alloys 1350–1400 0.55–0.65 Constant-load bulk deformation creep curves typically (but not always) consist of three distinct stages ( Fig. 3a ). The first stage (called primary creep...
Series: ASM Failure Analysis Case Histories
Volume: 3
Publisher: ASM International
Published: 01 December 2019
DOI: 10.31399/asm.fach.v03.c9001829
EISBN: 978-1-62708-241-9
... diffraction results show that carbides of normal region were TaC and Cr 23 C 6 . In the welded area, there are only coarse chromium-rich carbides that were generated during weld regeneration. In the welding process, the filler metal is Haynes 188, a solid-solution-strengthened superalloy having low-carbon...
Series: ASM Handbook
Volume: 11
Publisher: ASM International
Published: 15 January 2021
DOI: 10.31399/asm.hb.v11.a0006780
EISBN: 978-1-62708-295-2
... turbine engines Oxide-dispersion-strengthened nickel-base alloys 1350–1400 0.55–0.65 Correlation of damage level and life fraction consumed Table 3 Correlation of damage level and life fraction consumed Damage level Consumed life fraction range X Remaining life factor (1/ X...
Series: ASM Failure Analysis Case Histories
Publisher: ASM International
Published: 01 June 2019
DOI: 10.31399/asm.fach.aero.c9001600
EISBN: 978-1-62708-217-4
... Strengthening precipitates, evident only in the TEM IT0067, 01344AI Ultrafine, matrix strengthening precipitates, evident only in the TEM IT0011, 1316HMW Of these, it was not possible to determine differences in the size, density and distribution of the Al 7 Cu 2 Fe and Al-Si oxide particles...
Series: ASM Failure Analysis Case Histories
Volume: 3
Publisher: ASM International
Published: 01 December 2019
DOI: 10.31399/asm.fach.v03.c9001756
EISBN: 978-1-62708-241-9
... of overheating like grain coarsening, grain boundary thickening, or dissolution of the strengthening precipitates, etc. The samples also revealed solution-treated and aged structures which were similar to that noticed in the samples sectioned from the other locations in the blades. Micro examination...
Series: ASM Failure Analysis Case Histories
Volume: 1
Publisher: ASM International
Published: 01 December 1992
DOI: 10.31399/asm.fach.v01.c9001025
EISBN: 978-1-62708-214-3
... C130 landing gear wheels. The Air Force does require dye penetrant inspections of the wheels at required tire changes. In addition, C130 wheels have been redesigned since the aircraft was introduced, and the wheels now possess a double flange ( Fig. 2 ), which significantly strengthens the radius...
Series: ASM Failure Analysis Case Histories
Volume: 1
Publisher: ASM International
Published: 01 December 1992
DOI: 10.31399/asm.fach.v01.c9001031
EISBN: 978-1-62708-214-3
... on a study on the dispersion strengthening of copper-zirconium alloys by internal oxidation ( Ref 2 ), the homogeneous phase was produced by the rapid movement of the oxidation front through the material. This phenomenon reduced the time necessary for substantial zirconium diffusion away from the original...
Series: ASM Failure Analysis Case Histories
Publisher: ASM International
Published: 01 June 2019
DOI: 10.31399/asm.fach.modes.c9001724
EISBN: 978-1-62708-234-1
... in operation, arising from a combination of stresses which will be discussed later, so it is very desirable that the rather soft and yielding austenitic steel be hardened and strengthened — and this can be done only by cold working (actually, warm working). For such a large ring as this — 52.75 in. inside...
Series: ASM Handbook Archive
Volume: 11
Publisher: ASM International
Published: 01 January 2002
DOI: 10.31399/asm.hb.v11.a0003543
EISBN: 978-1-62708-180-1
Series: ASM Handbook
Volume: 11
Publisher: ASM International
Published: 15 January 2021
DOI: 10.31399/asm.hb.v11.a0006778
EISBN: 978-1-62708-295-2
Series: ASM Failure Analysis Case Histories
Volume: 1
Publisher: ASM International
Published: 01 December 1992
DOI: 10.31399/asm.fach.v01.c9001123
EISBN: 978-1-62708-214-3
... that the actual composition with respect to aluminum, lead, and magnesium was different from the specified alloy. Scanning electron microscopy showed intergranular failure with enhanced aluminum and segregation of lead at grain boundaries. In this type of alloy, aluminum is used for strengthening through grain...
Series: ASM Failure Analysis Case Histories
Publisher: ASM International
Published: 01 June 2019
DOI: 10.31399/asm.fach.process.c0046028
EISBN: 978-1-62708-235-8
.... A burned layer on the surface of the latch indicated that the cracks had been caused by improper grinding after hardening. To strengthen the stop-arm latch tip, the size of the backing web that reinforced the tip was increased (Improved design. Detail A, Fig. 1a ). Also, the radius at the relief step...
Series: ASM Handbook Archive
Volume: 11
Publisher: ASM International
Published: 01 January 2002
DOI: 10.31399/asm.hb.v11.a0003517
EISBN: 978-1-62708-180-1
... corrosion damage, and coating degradation. Strengthening Mechanisms Almost all of the alloys used in industrial gas turbine blades belong to the family of precipitation-hardened alloys. High creep, tensile, and fatigue strengths are achieved in superalloys by a variety of strengthening mechanisms...
Series: ASM Failure Analysis Case Histories
Publisher: ASM International
Published: 01 June 2019
DOI: 10.31399/asm.fach.modes.c9001691
EISBN: 978-1-62708-234-1
... depend on precipitated phases for strengthening and are susceptible to intergranular corrosion and pitting. Duraluminum-type alloys (Al-Cu) are strong because of precipitation of the compound AlCu 2 . Substantial potential differences between the copper-depleted areas and adjacent material exist. When...