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Master alloys

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Series: ASM Failure Analysis Case Histories
Volume: 2
Publisher: ASM International
Published: 01 December 1993
DOI: 10.31399/asm.fach.v02.c9001283
EISBN: 978-1-62708-215-0
.... The source of segregation was suspected to be the use of improperly made master alloys. Use of improved melting techniques and proper master alloys was recommended. Fracturing Master alloys Segregations L77 Al-4Cu Metalworking-related failures Background Visual Examination of General...
Series: ASM Failure Analysis Case Histories
Publisher: ASM International
Published: 01 June 2019
DOI: 10.31399/asm.fach.aero.c0047856
EISBN: 978-1-62708-217-4
...Abstract Abstract The master connecting rod of a reciprocating aircraft engine revealed cracks during routine inspection. The rods were forged from 4337 (AMS 6412) steel and heat treated to a specified hardness of 36 to 40 HRC. H-shaped cracks in the wall between the knuckle-pin flanges were...
Series: ASM Handbook
Volume: 11A
Publisher: ASM International
Published: 30 August 2021
DOI: 10.31399/asm.hb.v11A.a0006819
EISBN: 978-1-62708-329-4
... and Commentary , American Society of Mechanical Engineers , New York , 2014 45. Dong P. , Hong J. , Osage D. , Dewees D. , and Prager M. , “ The Master S - N Curve Method: An Implementation for Fatigue Evaluation of Welded Components in the ASME B&PV Code, Section VIII...
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
... creep data for the alloy. For instance, the American Petroleum Institute standard API-RP 530 recommends the use of Larson-Miller master curves of temperature/stress/time plots for the design of HK-40 reformer tubing. This is based on a service life of 100,000 h. Circumstances Leading to Failure...
Series: ASM Handbook
Volume: 11A
Publisher: ASM International
Published: 30 August 2021
DOI: 10.31399/asm.hb.v11A.a0006807
EISBN: 978-1-62708-329-4
... representing a different test temperature. Larson and Miller postulated that this family of curves can be combined to generate a master curve by replotting the data using a time-temperature parameter, called the LMP, defined as: (Eq 1) LMP = T ( C + log t r ) where T...
Series: ASM Handbook Archive
Volume: 11
Publisher: ASM International
Published: 01 January 2002
DOI: 10.31399/asm.hb.v11.a0003537
EISBN: 978-1-62708-180-1
..., or combinations thereof. Possible root causes also include design mistakes such as inadequate stress analysis, alloy selection, improper mechanical/thermal processing, improper assembly, and failure to accommodate an adverse operating environment. Fractography provides a unique tool to determine potential causal...
Series: ASM Failure Analysis Case Histories
Publisher: ASM International
Published: 01 June 2019
DOI: 10.31399/asm.fach.modes.c9001632
EISBN: 978-1-62708-234-1
.... 4 The manipulators, television cameras, and movable support structure of the LANSCE Monitor Fig. 5 The control room for the Monitor system showing the master-slave force-feedback manipulator controls and the television screens It was necessary to extract the window assembly...
Series: ASM Handbook Archive
Volume: 11
Publisher: ASM International
Published: 01 January 2002
DOI: 10.31399/asm.hb.v11.a0001808
EISBN: 978-1-62708-180-1
... to preserve the edge or edges of the fracture surface. In addition, metallographic examination can reveal microstructure near the fracture surface, the grain size of the material, and the presence of undue segregation, inclusions, alloy concentrations, brittle grain-boundary phases, decarburization...
Series: ASM Handbook
Volume: 11A
Publisher: ASM International
Published: 30 August 2021
DOI: 10.31399/asm.hb.v11A.a0006810
EISBN: 978-1-62708-329-4
... of shaft. Dimensions given in inches. (b) Fracture surface showing diametrically opposed origins (arrows) Fig. 35 Forged grade 4337 steel master connecting rod for a reciprocating aircraft engine that failed by fatigue cracking in the bore section between the flanges. (a) Configuration...
Series: ASM Handbook
Volume: 11
Publisher: ASM International
Published: 15 January 2021
DOI: 10.31399/asm.hb.v11.a0006774
EISBN: 978-1-62708-295-2
... Tension Specimens ,” Master’s thesis, University of Tennessee , 1974 12. Ward I.M. , Mechanical Properties of Solid Polymers , 2nd ed. , John Wiley , New York , 1983 13. Kambour R.P. and Robertson R.E. , Mechanical Properties of Plastics , Polymer Science , Jenkins...
Series: ASM Failure Analysis Case Histories
Volume: 3
Publisher: ASM International
Published: 01 December 2019
DOI: 10.31399/asm.fach.v03.c9001781
EISBN: 978-1-62708-241-9
.... Shackelford J.C. , Development of a short range tracking system using an inertial measurement unit . Master’s Thesis , Department of Aerospace Engineering, Mississippi State University 2011 7. McGinnis R.S. , Nesbit S. , Open Sports Sci. J. 3 , 155 – 164 ( 2010 ) 10.2174...
Series: ASM Handbook
Volume: 11A
Publisher: ASM International
Published: 30 August 2021
DOI: 10.31399/asm.hb.v11A.a0006831
EISBN: 978-1-62708-329-4
... alloy by three master alloys. Source: Ref 27 Fig. 38 Crack (arrows) in casting that developed during torque testing. Original magnification: ~1.1× Fig. 39 Scanning electron micrograph showing (a) overall fracture surface in crack-initiation area and (b) detail at area C...
Series: ASM Failure Analysis Case Histories
Volume: 3
Publisher: ASM International
Published: 01 December 2019
DOI: 10.31399/asm.fach.v03.c9001769
EISBN: 978-1-62708-241-9
... samples were characterized employing XRD and FTIR. The scale samples collected from IA/PA mild steel heat exchanger tube were powdered and analyzed by XRD and FTIR. The XRD model of X’pert PRO PAN analyzed X-ray diffractometer with Syn Master 793 software to identify the nature of scale product. The XRD...
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
... and tubing. The article discusses metallurgical instabilities of steel-based alloys and nickel-base superalloys. It provides information on several life assessment methods, namely, the life fraction rule, parameter-based assessments, the thermal-mechanical fatigue, coating evaluations, hardness testing...
Series: ASM Handbook
Volume: 11
Publisher: ASM International
Published: 15 January 2021
DOI: 10.31399/asm.hb.v11.a0006775
EISBN: 978-1-62708-295-2
... in the ease of twinning among alloys having an hcp structure, just as there are differences in the stress necessary to cause cleavage. Deformation twinning occurs in materials having a bcc lattice, with twinning more likely at low temperature and elevated strain rates. (Strain rates commonly encountered...
Series: ASM Handbook Archive
Volume: 11
Publisher: ASM International
Published: 01 January 2002
DOI: 10.31399/asm.hb.v11.a0003538
EISBN: 978-1-62708-180-1
... mechanically twin only with considerable difficulty. Alternatively, hcp materials mechanically twin more easily; so easily in fact, that sometimes mechanical polishing of a metallographic specimen can introduce artifacts. There are considerable differences, however, in the ease of twinning among alloys having...
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: 11A
Publisher: ASM International
Published: 30 August 2021
DOI: 10.31399/asm.hb.v11A.a0006811
EISBN: 978-1-62708-329-4
... and striations, consistent with fatigue fracture in a Co-Cr-Mo alloy Fig. 19 Stereomicroscopic image of the subject stem fracture surface with latrogenic damage indicated by arrow. Fig. 23 Scanning electron microscopy image of the subject hinge post posterior internal threads indicating...
Series: ASM Handbook Archive
Volume: 11
Publisher: ASM International
Published: 01 January 2002
DOI: 10.31399/asm.hb.v11.a0003536
EISBN: 978-1-62708-180-1
... 1203, Masters J.E. and Gilbertson L.N. , Ed., ASTM , 1993 , p 3 – 22 5. Shyam A. , Padula S.A. II , Davidson D.L. , and Miligan W.W. , Fatigue Crack Propagation Thresholds in Nickel base Super Alloys at High Frequencies and Temperatures , Metall. Mater...
Series: ASM Handbook Archive
Volume: 11
Publisher: ASM International
Published: 01 January 2002
DOI: 10.31399/asm.hb.v11.a0003556
EISBN: 978-1-62708-180-1
.... It discusses the degradation of various protective systems, such as corrosion inhibitors and lubricants. The article describes the failure analysis of steel, iron, copper, aluminum, and their alloys. It also discusses the probes available to monitor conditions relevant to MIC in industrial systems...