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impact toughness

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Series: ASM Technical Books
Publisher: ASM International
Published: 01 January 2015
DOI: 10.31399/asm.tb.tpmpa.t54480225
EISBN: 978-1-62708-318-8
...-6Al-4V structural part was forged from the beta field. Beta-forged parts can exhibit significant improvement in strength, creep resistance, fatigue, and fracture toughness values. Figure 10.23 shows the effects on impact strength of forging from above the beta transus. Other examples of...
Series: ASM Technical Books
Publisher: ASM International
Published: 01 January 2015
DOI: 10.31399/asm.tb.tpmpa.t54480001
EISBN: 978-1-62708-318-8
... strength (0.2%), MPa (ksi) 170 (25) Elongation in tension, % 35 Shear strength, MPa (ksi) ~140 (~20) Charpy impact strength, J (ft · lbf) 27–54 (20–40) Fatigue strength, F tu 0.5–0.6 Notched fatigue strength, ( K t ≥ 4), F tu 0.2–0.3 Creep strength (315 °C, or 600 °F, 10...
Series: ASM Technical Books
Publisher: ASM International
Published: 01 November 2012
DOI: 10.31399/asm.tb.ffub.t53610377
EISBN: 978-1-62708-303-4
...-dominated property. The selection of a toughened resin can significantly improve the resistance to impact damage. In addition, S-2 glass and aramid fibers are extremely tough and damage tolerant. During the design phase, it is important to recognize the potential for delaminations and use conservative...
Book Chapter

Series: ASM Technical Books
Publisher: ASM International
Published: 01 November 2007
DOI: 10.31399/asm.tb.smnm.t52140099
EISBN: 978-1-62708-264-8
... tempering temperatures. As explained in Chapter 4, “The Various Microstructures of Room-Temperature Steel,” toughness is a better measure of the ability of a steel to avoid failure than is ductility. Toughness is evaluated with impact tests, such as the Charpy test. The Izod test is an impact test...
Book Chapter

Series: ASM Technical Books
Publisher: ASM International
Published: 01 December 2003
DOI: 10.31399/asm.tb.cfap.t69780055
EISBN: 978-1-62708-281-5
... predicting plastic part performance (stiffness, strength/impact, creep/stress relaxation, and fatigue) integrated with manufacturing concerns (flow length and cycle time) are demonstrated for design and material selection. plastics material selection materials design plastic parts stiffness impact...
Book Chapter

Series: ASM Technical Books
Publisher: ASM International
Published: 01 December 2001
DOI: 10.31399/asm.tb.aub.t61170107
EISBN: 978-1-62708-297-6
... supporting the carbide phase can be adjusted via alloy content and heat treatment to optimize the balance between abrasion resistance and impact toughness. It also describes the effect of alloying elements and inoculants on various properties and behaviors and provides information on commercial alloy grades...
Book Chapter

Series: ASM Technical Books
Publisher: ASM International
Published: 01 December 2001
DOI: 10.31399/asm.tb.aub.t61170234
EISBN: 978-1-62708-297-6
... tensile strength 0.2% offset yield strength Elongation in 25 mm (1 in.), % Reduction in area, % Charpy V-notch impact toughness (a) Plane-strain fracture toughness (a) MPa ksi MPa ksi J ft · lbf MPa m ksi in . 18Ni(250) 1870 271 1825 265 12 64.5 37 27 138...
Series: ASM Technical Books
Publisher: ASM International
Published: 01 December 2001
DOI: 10.31399/asm.tb.aub.t61170123
EISBN: 978-1-62708-297-6
...) ✓ ✓ (e) ✓ ✓ (f) ✓ (g) x (h) Charpy impact x ✓ ✓ ✓ (c) x x x Fracture ( K Tc ) toughness x ✓ (i) ✓ ✓ x (j) ✓ (c) ✓ (k) ✓ x x High-temperature properties Strength ✓ (l) ✓ ✓ Creep...
Series: ASM Technical Books
Publisher: ASM International
Published: 01 December 2001
DOI: 10.31399/asm.tb.aub.t61170091
EISBN: 978-1-62708-297-6
... improves strength, a maximum of 0.04% P is desirable to avoid lower ductility and impact strength. Fig. 7 The effect of silicon on mechanical properties of CG irons produced by the in-mold process. Carbon equivalents ranged from 4.33 to 4.45. The pearlite/ferrite ratio, and thus the strength...
Series: ASM Technical Books
Publisher: ASM International
Published: 01 December 2001
DOI: 10.31399/asm.tb.aub.t61170540
EISBN: 978-1-62708-297-6
... composition in these alloys are less pronounced than in the case for the cobalt-base carbide-type alloys (Stellite), for example. The Laves phase is specifically responsible for outstanding abrasion resistance, but it severely limits the material ductility and the impact strength. In fact, it is difficult to...
Series: ASM Technical Books
Publisher: ASM International
Published: 01 December 2001
DOI: 10.31399/asm.tb.aub.t61170573
EISBN: 978-1-62708-297-6
... used in machining of cast iron and other abrasive or gummy materials. The 6% Co grade has moderate values for all properties and is a good general-purpose carbide material. The 25% Co grade has the greatest toughness and is used for applications involving heavy impact. Because of its relatively low...
Series: ASM Technical Books
Publisher: ASM International
Published: 01 December 2001
DOI: 10.31399/asm.tb.aub.t61170193
EISBN: 978-1-62708-297-6
... which high strength, weight saving improved formability, and good weldability are important A 808 High-strength low-alloy steel with improved notch toughness V, Nb Hot-rolled steel plate ≤65 mm (2½ in.) in thickness Charpy V-notch impact energies of 40–60 J (30–45 ft.-Ibl) at -45 °C (-50 °F...
Series: ASM Technical Books
Publisher: ASM International
Published: 01 December 2001
DOI: 10.31399/asm.tb.aub.t61170242
EISBN: 978-1-62708-297-6
... trackwork at frogs, switches, and crossings, where wheel impacts at intersections are especially severe. Because austenitic manganese steel resists metal-to-metal wear, it is used in sprockets, pinions, gears, wheels, conveyor chains, wear plates, and shoes. Austenitic manganese steel has certain...
Book Chapter

Series: ASM Technical Books
Publisher: ASM International
Published: 01 December 2001
DOI: 10.31399/asm.tb.aub.t61170062
EISBN: 978-1-62708-297-6
... different section sizes cool at different rates. Tempering after normalizing is also used to obtain high toughness and impact resistance. The effect of tempering on hardness and tensile properties depends on the composition of the iron and the hardness level obtained in normalizing. Tempering usually...
Book Chapter

Series: ASM Technical Books
Publisher: ASM International
Published: 01 December 2001
DOI: 10.31399/asm.tb.aub.t61170003
EISBN: 978-1-62708-297-6
... temperature, are susceptible to a lowering of absorbed impact energy with decreasing temperature. This change is accompanied by a transition in the appearance of the fracture surface from a ductile one to a brittle one. This ductile-to-brittle transition occurs over a relatively narrow subfreezing...
Series: ASM Technical Books
Publisher: ASM International
Published: 01 December 2001
DOI: 10.31399/asm.tb.aub.t61170495
EISBN: 978-1-62708-297-6
... twice as much tungsten as molybdenum must be added by weight to achieve atomically equivalent effects. Because of the negative impact this would have on alloy density and because of the typically higher cost and lower availability of tungsten, additions of molybdenum are generally preferred. However...
Series: ASM Technical Books
Publisher: ASM International
Published: 01 December 2001
DOI: 10.31399/asm.tb.aub.t61170351
EISBN: 978-1-62708-297-6
... physical metallurgy of aluminum, is truly remarkable. Higher strengths, up to a yield strength of 690 MPa (100 ksi) and over, may be readily produced, but the fracture toughness of such alloys does not meet levels considered essential for aircraft or other critical-structure applications. The elements...
Book Chapter

Series: ASM Technical Books
Publisher: ASM International
Published: 01 December 2001
DOI: 10.31399/asm.tb.aub.t61170021
EISBN: 978-1-62708-297-6
... 2.5% Si Both carbon and silicon influence the nature of iron castings, so it is necessary to develop an approximation of their impact on solidification. This has been accomplished through development of the concept of carbon equivalence (CE). Using this approach, carbon equivalence is...
Series: ASM Technical Books
Publisher: ASM International
Published: 01 January 2015
DOI: 10.31399/asm.tb.spsp2.t54410439
EISBN: 978-1-62708-265-5
... in impact transition curves for two hypothetical steels in tough and embrittled conditions. Large differences in room temperature toughness due to embrittlement are noted for the two steels. Source: Ref 19.38 The conditions for quench embrittlement , an intergranular mechanism of brittle...
Series: ASM Technical Books
Publisher: ASM International
Published: 01 August 2005
DOI: 10.31399/asm.tb.mmfi.t69540169
EISBN: 978-1-62708-309-6
... all three fracture parameters—static K IC , K Id , and V-notch impact energy—are connected in some way so that correlation among any two parameters is feasible. Fig. 4.23 Influence of loading rate and temperature on fracture toughness of A 302 B steel. Source: Ref 4.32 The...