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Charpy impact test

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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: 12
Publisher: ASM International
Published: 01 January 1987
DOI: 10.31399/asm.hb.v12.a0000601
EISBN: 978-1-62708-181-8
... iron. SEM, 2180× (E.P. George and D.P. Pope, University of Pennsylvania) Fig. 3 Stereo pair of scanning electron microscope views of the fracture surface of a Charpy impact test bar of high-purity iron. The specimen was broken after being cooled to equilibrium in liquid nitrogen (−196 °C, or...
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
... disadvantage of Rockwell type tests, for which 15 standard and 15 superficial scales were developed. Not one of these scales can cover the full hardness range. The HRA scale covers the broadest hardness range, but it is not commonly used. In the Vickers test, the load is applied smoothly, without impact...
Book Chapter

Series: ASM Desk Editions
Publisher: ASM International
Published: 01 December 1998
DOI: 10.31399/asm.hb.mhde2.a0003108
EISBN: 978-1-62708-199-3
... … 4 60 … 341–444 200-155-1 … 200 … 155 1 … 25 388–477 1400-1100-1 1400 … 1100 … 1 35 … 388–477 230-185 … 230 … 185 (b) … (b) 444–555 1600-1300 1600 … 1300 … (b) (b) … 444–555 (a) Unnotched Charpy bars tested at 72 ± 7 °F (22 ± 4 °C). The...
Book Chapter

Book: Casting
Series: ASM Handbook
Volume: 15
Publisher: ASM International
Published: 01 December 2008
DOI: 10.31399/asm.hb.v15.a0005323
EISBN: 978-1-62708-187-0
... properties and specifications of test bar. It discusses the properties of gray iron, such as fatigue limit, pressure tightness, impact resistance, machinability, and dimensional stability, at both room and elevated temperature. Wear behavior of gray iron castings during sliding contact under conditions of...
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.a0000624
EISBN: 978-1-62708-181-8
... Fig. 1201 . During testing, specimen temperature was controlled by an isopentane bath cooled with liquid nitrogen. Ferrite grain size, 30 μm. The angle of the notch was 45°, and the nominal radius of the root of the notch was 0.25 mm (0.01 in.). The fracture originated at cracked Ti(C, N) particles...
Series: ASM Desk Editions
Publisher: ASM International
Published: 01 December 1998
DOI: 10.31399/asm.hb.mhde2.a0003113
EISBN: 978-1-62708-199-3
... 8 using a crosshead speed of 0.5 mm/min (0.02 in./min). Room-temperature impact testing was carried out on standard Charpy V-notch specimens according to ASTM E 23. Rotating-bending fatigue (RBF) testing was performed using single-load, cantilever, rotating fatigue testers. The tensile, impact, and...
Series: ASM Handbook
Volume: 12
Publisher: ASM International
Published: 01 January 1987
DOI: 10.31399/asm.hb.v12.a0000608
EISBN: 978-1-62708-181-8
...), exhibits a fracture surface containing only radial marks. All at 8× These four light fractographs show the surfaces of impact fractures in Charpy specimens of AISI 4340 steel heat treated to a hardness of 27 HRC and depict the changes in surface characteristics as test temperature was decreased. The...
Series: ASM Handbook
Volume: 14A
Publisher: ASM International
Published: 01 January 2005
DOI: 10.31399/asm.hb.v14a.a0003988
EISBN: 978-1-62708-185-6
... 10.8 mm (0.425 by 0.425 in.) square (for impact testing) were then cut from forged billets. These specimens were used for heat treatment. Three heat treatments were used in developing the properties of the prealloyed powder forged materials: case carburizing, blank carburizing, and through hardening...
Series: ASM Desk Editions
Publisher: ASM International
Published: 01 December 1998
DOI: 10.31399/asm.hb.mhde2.a0003224
EISBN: 978-1-62708-199-3
..., soundness, cracking, heat treatment, structural variations, heat effects, surface conditions, and many other material characteristics. Other popular destructive tests are impact testing to determine the response of the material to rapidly applied loads, fatigue testing to determine reaction to repeated...
Series: ASM Desk Editions
Publisher: ASM International
Published: 01 December 1998
DOI: 10.31399/asm.hb.mhde2.a0003104
EISBN: 978-1-62708-199-3
... flow conditions induce cavitation in the liquid adjacent to a surface, and when droplets carried by a flowing gas impact against a surface. Corrosion may be involved in the erosion process, especially in liquids or when the temperature is above room ambient. When abrasion testing of materials...
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...
Book: Casting
Series: ASM Handbook
Volume: 15
Publisher: ASM International
Published: 01 December 2008
DOI: 10.31399/asm.hb.v15.a0005338
EISBN: 978-1-62708-187-0
... that is normally tested for zirconium castings. Zirconium Charpy impact properties have been shown to be somewhat less than that of wrought products in the same alloy grade ( Ref 11 ). Work has been done to study and improve the impact properties of zirconium castings ( Ref 15 ). This article has...
Book: Casting
Series: ASM Handbook
Volume: 15
Publisher: ASM International
Published: 01 December 2008
DOI: 10.31399/asm.hb.v15.a0005343
EISBN: 978-1-62708-187-0
... from the casting had mechanical properties below the minimum requirement for a separately cast specimen. Three 10 by 10 mm (0.4 by 0.4 in.) Charpy V-notch impact specimens were also extracted from the spindle and tested at −20 °C (−4 °F). The average impact toughness value of the specimens was well...
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...
Book Chapter

Series: ASM Desk Editions
Publisher: ASM International
Published: 01 December 1998
DOI: 10.31399/asm.hb.mhde2.a0003098
EISBN: 978-1-62708-199-3
...%. (h) These ASTM specifications also include alloy steel castings for the general type of applications listed in the table. (i) Testing temperature of −32 °C (−25 °F). (j) Charpy V-notch impact testing at the specified test temperature with an energy value of 18 J (13 ft · lbf) min for two...
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...
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.a0005697
EISBN: 978-1-62708-181-8
... confidence limits cm centimeter cpm cycles per minute cps cycles per second CRT cathode ray tube CSFS computer-simulated fracture surface CVN Charpy V-notch (impact test or specimen) d day d used in mathematical expressions involving a derivative (denotes...