Combined mode I-mode III fracture of a high strength low-alloy steel

Schroth, James G.; Hirth, J. P.; Hoagland, R. G.; Rosenfield, A. R.

doi:10.1007/bf02668555

Cited by 81 publications

(17 citation statements)

References 23 publications

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“…Mixed mode I/III fracture has been the focus of many studies. [7][8][9][10][11][12][13][14][15][16][17][18] These studies have shown that the superposition of mode III loading results in a drastic reduction in the fracture toughness in some materials, whereas it has little effect or even results in an increase in fracture toughness in other materials.…”

Section: Introductionmentioning

confidence: 99%

Effect of Temperature on Fracture Toughness of Timetal 834 Titanium Alloy under Mode I and Mixed Mode I/III Loading

Rao

Srinivas

Kamat

2008

Metall Mater Trans A

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The effect of temperature on fracture toughness of Timetal 834 titanium alloy plate under mode I and mixed mode I/III loading was investigated. Both mode I and mixed mode I/III fracture toughness values were initially found to increase as the temperature is increased from room temperature to 723 K. Beyond this temperature, both the fracture toughness values decreased up to 773 K and then showed a significant increase at 823 K. It was also observed that at room temperature, the fracture toughness under mixed mode I/III loading was higher than the corresponding mode I fracture toughness, whereas at 723, 748, and 773 K, the fracture toughness under mixed mode I/III loading was lower than the corresponding mode I fracture toughness, and at 823 K, the two toughness values were comparable. The results were explained on the basis of the occurrence of dynamic strain aging (DSA), change in fracture mechanism, and the nature of the deformation fields ahead of the crack tip under mode I and mixed mode I/III loading.

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Section: Introductionmentioning

confidence: 99%

Effect of Temperature on Fracture Toughness of Timetal 834 Titanium Alloy under Mode I and Mixed Mode I/III Loading

Rao

Srinivas

Kamat

2008

Metall Mater Trans A

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“…Of this work, a portion involves non-proportional loading which we do not consider here, focusing instead only on work involving modified compact tension specimens [1][2][3][4][5][6][7][8][9][10][11][12][13][14][15][16][17][18][19] . The superposition of mode III loading results in drastic reduction in fracture toughness in some materials whereas in other materials it has liitfle effect or even results in an increase in the fracture toughness.…”

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confidence: 99%

A mixed mode fracture mechanism map

Manoharan

Kamat

1995

Int J Fract

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As fracture mechanics has developed as a discipline, many parameters have been developed to characterize the instability condition. However, a majority of this work has been confined to the investigation of mode I fracture. Thus, we have standardized methods for experimentally determining KIo, J~, and J-resistance curves for mode I crack propagation. However, cracks in real materials can be subjected not just to tensile stresses but to complex stress states so that the development of suitable parameters to charactrterize mixed-mode crack initiation and propagation is important in the evolution of suitable design criteria. Further, observations indicate that initially flat cracks in some tough materials tend to reorient themselves to oblique planes during growth. For these materials, crack propagation can be said to occur under combined mode conditions.A considerable amount of work on mixed mode I/III fracture toughness of materials [1-26] is available. Of this work, a portion involves non-proportional loading which we do not consider here, focusing instead only on work involving modified compact tension specimens [1][2][3][4][5][6][7][8][9][10][11][12][13][14][15][16][17][18][19] . The superposition of mode III loading results in drastic reduction in fracture toughness in some materials whereas in other materials it has liitfle effect or even results in an increase in the fracture toughness. Fracture mechanism maps delineating regions of susceptibility to tensile and shear loads have been proposed [27,28]. In this paper, data on a wider range of materials, including steels, aluminum alloys, metal matrix composites, ceramics and polymers have been used to extend and reinforce the fracture mechanism map concept.The data for the yield strength (o), mode I fracture toughness (J,) and 45 ° mixed mode fracture toughness (JTo) fofdifferent materials is enumerate~i in Table 1. The effect of the yield strength and mode I fracture toughness on the mixed mode fracture toughness can be represented by a plot of J.rJJic versus J J o . It can . . . . . Y , clearly be seen that materials which have a very low J,Jo rano exhibit a h~gher • Y .mixed-mode fracture toughness than the mode I fracture toughness. W~th an increase in the J J o ratio, the JTJJ,o ratio decreases and becomes significantly lower than unity indicating an increased susceptibility to mixed mode fracture. This trend, however, is reversed after a critical value of J J o is reached• An Int Journ of Fracture 73 (1995)

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“…The materials included in Figure 10 are both ductile (e.g., 2034 Al alloy, [17] A710 steel, [31] and 1090 steel, [32] ) and brittle (e.g., pearlitic steel, [33] polycrystalline tungsten, [13] PMMA, [14] and silica-particulate-filled epoxide resin [34] ). The significant increases in normalized fracture energy with increased mixed mode in both the fully amorphous Vitreloy I and partially crystallized Vitreloy 106 are clear when plotted in this manner.…”

Section: Mixed Mode Fracturementioning

confidence: 99%

Increased Toughness of Zirconium-Based Bulk Metallic Glasses Tested under Mixed Mode Conditions

Varadarajan

Thurston

Lewandowski

2009

Metall Mater Trans A

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The effects of mixed mode loading on the fracture behavior of Zr-based bulk metallic glasses (BMGs) (Vitreloy I and Vitreloy 106) were investigated. Mixed mode I/II and mixed mode I/III fracture conditions were tested using both notched and fatigue-precracked specimens. Fully amorphous samples exhibited tremendous increases in fracture energy with the application of mixed mode loading, while partially crystalline samples exhibited more modest increases. A comparison to the behavior of other material systems (e.g., polymers, ceramics, crystalline metals, and composites) illustrates the tremendous increase in fracture energy exhibited by these BMGs under mixed mode loading conditions.

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Combined mode I-mode III fracture of a high strength low-alloy steel

Cited by 81 publications

References 23 publications

Effect of Temperature on Fracture Toughness of Timetal 834 Titanium Alloy under Mode I and Mixed Mode I/III Loading

Effect of Temperature on Fracture Toughness of Timetal 834 Titanium Alloy under Mode I and Mixed Mode I/III Loading

A mixed mode fracture mechanism map

Increased Toughness of Zirconium-Based Bulk Metallic Glasses Tested under Mixed Mode Conditions

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