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precracked Charpy test

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Book Chapter

Series: ASM Desk Editions
Publisher: ASM International
Published: 01 December 1998
DOI: 10.31399/asm.hb.mhde2.a0003243
EISBN: 978-1-62708-199-3
... reproduce the extreme conditions of sacrificial anodic protection generally found on a ship hull. A Charpy specimen was chosen, because such specimens are small and easy to machine and handle. In this test, however, the specimen was modified. Instead of using a fatigue precrack, the notch-root radius...
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
... or wedge-shaped cracks at grain triple points • Reaction scales or internal precipitation • Some cold flow in last stages of failure Contributing factors • Load exceeded the strength of the part • Check for proper alloy and processing by hardness check or destructive testing, chemical analysis...
Book Chapter

Series: ASM Desk Editions
Publisher: ASM International
Published: 01 December 1998
DOI: 10.31399/asm.hb.mhde2.a0003241
EISBN: 978-1-62708-199-3
... Abstract This article reviews the various types of mechanical testing methods, including hardness testing; tension testing; compression testing; dynamic fracture testing; fracture toughness testing; fatigue life testing; fatigue crack growth testing; and creep, stress-rupture, and stress...
Series: ASM Desk Editions
Publisher: ASM International
Published: 01 November 1995
DOI: 10.31399/asm.hb.emde.a0003025
EISBN: 978-1-62708-200-6
... applied energy in a short time. The area under the stress-strain curve is directly proportional to the impact strength. Two widely used techniques for impact measurement are Izod and Charpy tests as described in ASTM D 256. The two measurements can be correlated very well ( Ref 1 ). Samples for both tests...
Series: ASM Handbook
Volume: 8
Publisher: ASM International
Published: 01 January 2000
DOI: 10.31399/asm.hb.v08.9781627081764
EISBN: 978-1-62708-176-4
Series: ASM Handbook
Volume: 12
Publisher: ASM International
Published: 01 January 1987
DOI: 10.31399/asm.hb.v12.a0001834
EISBN: 978-1-62708-181-8
... images at the same magnification. All four fractographs are of different areas. Figure 6 shows the interface between the fatigue precrack and test fracture of an X-750 nickel-base superalloy subsize Charpy rising-load test specimen after testing in pure water at 95 °C (200 °F). The interface region...
Series: ASM Handbook
Volume: 17
Publisher: ASM International
Published: 01 August 2018
DOI: 10.31399/asm.hb.v17.a0006462
EISBN: 978-1-62708-190-0
... approved materials with known and controlled ductility properties. Pressure vessel material specifications typically include minimum “reduction of area” at fracture, and in some cases minimum impact energy (e.g., Charpy tests). These measurements serve as simpler proxy tests implying a certain level of...
Series: ASM Handbook
Volume: 12
Publisher: ASM International
Published: 01 January 1987
DOI: 10.31399/asm.hb.v12.a0001832
EISBN: 978-1-62708-181-8
... 14 days. The coatings were removed by ultrasonic cleaning with the appropriate solvent, and the fracture surfaces were visually evaluated. Only the Tectyl 506 compound protected the fractures from rusting during the screening tests. Therefore, further studies were conducted with a scanning electron...
Book: Casting
Series: ASM Handbook
Volume: 15
Publisher: ASM International
Published: 01 December 2008
DOI: 10.31399/asm.hb.v15.a0005324
EISBN: 978-1-62708-187-0
... Pearlite or tempered martensite DQ&T (e) … … … … … … … … … By agreement Tempered martensite (a) ISO mean values from three tests. Measured from separately cast V-notched samples at room temperature (RT). SAE J434 are typical values for separately cast Charpy unnotched samples at...
Series: ASM Handbook
Volume: 12
Publisher: ASM International
Published: 01 January 1987
DOI: 10.31399/asm.hb.v12.a0000609
EISBN: 978-1-62708-181-8
... : SEM, 850×. Fig. 575 : SEM, 13,000× (D.W. Moon and E.A. Metzbower, Naval Research Laboratory) Intentional fracture by overpressurization of ASTM A508, class 2, pressure vessel. The intermediate test vessel (ITV) was fabricated as part of the Heavy Section Steel Technology (HSST) program at Oak...
Series: ASM Handbook
Volume: 2
Publisher: ASM International
Published: 01 January 1990
DOI: 10.31399/asm.hb.v02.9781627081627
EISBN: 978-1-62708-162-7
Series: ASM Handbook
Volume: 12
Publisher: ASM International
Published: 01 January 1987
DOI: 10.31399/asm.hb.v12.a0001831
EISBN: 978-1-62708-181-8
... alloy that was tested under rotating bending conditions. Compare with Fig. 17(b) . Fig. 19 Fatigue striations in a 2024-T3 aluminum alloy joined by tear ridges Fig. 20 Fatigue striations on adjoining walls on the fracture surface of a commercially pure titanium specimen. (O.E.M...
Series: ASM Handbook
Volume: 13B
Publisher: ASM International
Published: 01 January 2005
DOI: 10.31399/asm.hb.v13b.a0003822
EISBN: 978-1-62708-183-2
... retards absorption. The actual surface finish anticipated in service should be evaluated. After test exposure, sample evaluation may involve tensile, notched tensile, bend, cold formability (for example, drawn cup), Charpy V-notch impact, and/or hydrogen analysis. Uniaxial, smooth-specimen tensile...
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
... tempered. Tested as a Charpy V-notch specimen at 0 °C (32 °F). Source: Ref 30 There is also a particle size distribution in high-strength, age-hardening aluminum alloys, but different behavior in an aluminum casting alloy has been reported ( Ref 31 ). The iron- and/or silicon-rich phases are the...
Series: ASM Desk Editions
Publisher: ASM International
Published: 01 December 1998
DOI: 10.31399/asm.hb.mhde2.a0003225
EISBN: 978-1-62708-199-3
... cases (ships, storage tanks), brittle fracture is induced by low temperature and a state of triaxial tensile stresses at a critical location in the structure. The ductile-to-brittle transition is demonstrated readily by the Charpy V-notch impact test. The results of such tests conducted on a mild...
Series: ASM Handbook
Volume: 4E
Publisher: ASM International
Published: 01 June 2016
DOI: 10.31399/asm.hb.v04e.a0006261
EISBN: 978-1-62708-169-6
... commercial alloys). Ref 7 Fig. 6 Effect of amount of γ′ in Ni-Cr-Al alloys of fixed nickel content (75%) on yield strength (in compression tests) measured at 25 and 900 °C (75 and 1650 °F). All alloys were solution heat treated at 1150 °C (2100 °F) for 2 h, air cooled at 25 °C (75 °F), then aged...
Series: ASM Handbook
Volume: 22B
Publisher: ASM International
Published: 01 November 2010
DOI: 10.31399/asm.hb.v22b.9781627081979
EISBN: 978-1-62708-197-9