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Creep strength

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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 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
Publisher: ASM International
Published: 01 June 2019
DOI: 10.31399/asm.fach.modes.c0090463
EISBN: 978-1-62708-234-1
... contributing factor was the design of the part, which produced significant interference stresses between the contact and a mating retaining tab. Creep strength Housings Polycarbonate Brittle fracture A housing used in conjunction with an electrical switch failed shortly after being placed...
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
... in the article “Elevated-Temperature Life Assessment for Turbine Components, Piping, and Tubing” in this Volume and in the article “Assessment and Use of Creep-Rupture Properties” in Mechanical Testing and Evaluation, Volume 8 of ASM Handbook. While creep strength and rupture strength are given...
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
..., thermal fatigue, tension overload, and combinations of these, as modified by environment. This article briefly reviews the applied aspects of creep-related failures, where the mechanical strength of a material becomes limited by creep rather than by its elastic limit. The majority of information provided...
Series: ASM Failure Analysis Case Histories
Volume: 1
Publisher: ASM International
Published: 01 December 1992
DOI: 10.31399/asm.fach.v01.c9001104
EISBN: 978-1-62708-214-3
... the creep strength of Nicrofer 3718. This accounts for the continual stretching of the belt even when operated at the usual lower temperature. The sulfur attack and globular grain-boundary carbides explain the intergranular appearance of the fracture surface of some wires. That is, as most...
Series: ASM Failure Analysis Case Histories
Publisher: ASM International
Published: 01 June 2019
DOI: 10.31399/asm.fach.chem.c9001738
EISBN: 978-1-62708-220-4
... formation is not likely to occur, since the hoop stress at the inside diameter is much higher than at the outside diameter in such a thick-walled tube (9.5 compared to 6.5 MPa). Furthermore, the creep strength of the coarse-grained material at the outside diameter is higher than the creep strength...
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
... deformation is typically characterized by time-dependent strain curves, as discussed in more detail in the article “Creep and Stress Rupture Failures” in this Volume. Most (but not all) creep curves show three distinct stages, as briefly described in the following. Creep strength (i.e., the resistance...
Series: ASM Failure Analysis Case Histories
Volume: 3
Publisher: ASM International
Published: 01 December 2019
DOI: 10.31399/asm.fach.v03.c9001771
EISBN: 978-1-62708-241-9
... On the other hand, at high temperature, the growth of carbide in grain boundary takes place and produces a continuous network of carbide in grain boundary. This effect deteriorates the creep strength. The microstructure of unfailed tube is illustrated in Fig. 4 . This figure represents the blocky particle...
Series: ASM Failure Analysis Case Histories
Publisher: ASM International
Published: 01 June 2019
DOI: 10.31399/asm.fach.power.c9001669
EISBN: 978-1-62708-229-7
... to the center of the weld bead where final solidification occurs. Because of the segregation the center-line zone possesses a slightly lower creep strength, and is, therefore, more prone to cavitate and then crack. It is the nature of creep in an internally pressurized cylinder that stresses redistribute...
Series: ASM Failure Analysis Case Histories
Volume: 3
Publisher: ASM International
Published: 01 December 2019
DOI: 10.31399/asm.fach.v03.c9001834
EISBN: 978-1-62708-241-9
... in a high pressure boiler . Mater. Perform . 27 , 44 – 49 ( 2006 ) 3. Barraclough D.R. , Gooch D.J. , Effect of inadequate heat treatment on creep strength of 12CrMoV steel . Mater. Sci. Technol . 1 , 961 – 967 ( 1985 ) 4. Liu J.N. , Zhao Y.F. , Geng B. , Wang...
Series: ASM Handbook Archive
Volume: 11
Publisher: ASM International
Published: 01 January 2002
DOI: 10.31399/asm.hb.v11.a0001816
EISBN: 978-1-62708-180-1
... tubes are not chosen for thermal conductivity but for strength, especially creep or stress-rupture strength. Therefore, the temperature gradient through the steel is not controlled by design but accepted as a consequence of material selection. Third, at the fluid interface with the inside-diameter...
Series: ASM Handbook
Volume: 11
Publisher: ASM International
Published: 15 January 2021
DOI: 10.31399/asm.hb.v11.a0006787
EISBN: 978-1-62708-295-2
...-alumino-silicate (CMAS) melting temperature in tests conducted in ambient air. Courtesy of U.S. Navy Fig. 21 Comparative relative creep strengths of equiaxed, directionally solidified, and single-crystal alloys. Source: Ref 132 Fig. 20 Polarization curves of 310 stainless steel...
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
... was secondary• Short-term, high-temperature, high-stress rupture has ductile appearance (see creep) • Load exceeded the dynamic strength of the part• Check for proper alloy and processing as well as proper toughness, grain size• Loading direction may show failure was secondary or impact induced• Low...
Series: ASM Failure Analysis Case Histories
Publisher: ASM International
Published: 01 June 2019
DOI: 10.31399/asm.fach.power.c9001711
EISBN: 978-1-62708-229-7
... to locate the fracture conditions in Figure 4 . If the (LMP,S) point falls on or over the specific creep stress-rupture strength curve—that is, if S is equal or greater than σ for this value of LMP—failure is due to creep. This is the case of the 10CrMo9-10 steel. On the other hand...
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
... by hardness check or destructive testing, chemical analysis • Loading direction may show failure was secondary • Short-term, high-temperature, high-stress rupture has ductile appearance (see creep) • Load exceeded the dynamic strength of the part • Check for proper alloy and processing as well as proper...
Series: ASM Failure Analysis Case Histories
Volume: 3
Publisher: ASM International
Published: 01 December 2019
DOI: 10.31399/asm.fach.v03.c9001850
EISBN: 978-1-62708-241-9
..., the blow pipe was exposed to high temperatures when the liner cracked and subsequently bulged out due to creep. refractory-lined pipe creep deformation overheating carbon steel voids scale grain boundary oxidation grain coarsening microstructural examination strength P265GH (nonresulfurized...
Series: ASM Failure Analysis Case Histories
Publisher: ASM International
Published: 01 June 2019
DOI: 10.31399/asm.fach.power.c0091028
EISBN: 978-1-62708-229-7
... inspection, 2% nital etched 297x images, chemical analysis, and SEM fractographs) supported the conclusion that the superheater tube failed as a result of long-term overheating. Substantial creep damage reduced the strength of the tube to the point that overload failure occurred. No recommendations were made...
Series: ASM Failure Analysis Case Histories
Publisher: ASM International
Published: 01 June 2019
DOI: 10.31399/asm.fach.chem.c9001735
EISBN: 978-1-62708-220-4
... tube remaining life showed the welds to be inadequate, and to have a strength and creep resistance below those of the base metal. Reformer furnaces Tubine Welded joints HK-40 UNS J94224 Creep fracture/stress rupture A sample tube was removed from a reformer furnace for life assessment...
Series: ASM Failure Analysis Case Histories
Volume: 2
Publisher: ASM International
Published: 01 December 1993
DOI: 10.31399/asm.fach.v02.c9001280
EISBN: 978-1-62708-215-0
... indicated that the sulfur and phosphorus contents of the weld metal were higher than specified, the thickness was narrower at the weld, and the mechanical resistance of the weld metal was lower than specified. Cracking initiated at the weld root by coalescence of creep cavities. Propagation and expansion...
Series: ASM Handbook Archive
Volume: 11
Publisher: ASM International
Published: 01 January 2002
DOI: 10.31399/asm.hb.v11.a0003550
EISBN: 978-1-62708-180-1
... includes such things as tensile and impact strengths. Long-term properties include creep, stress relaxation, and creep (stress) rupture. Both categories of properties are affected by exposure to external chemical environments. With any polymeric material, chemical exposure may have one or more...