Quasi-static and dynamic fracture toughness of a γ-TiAl alloy: Measurement techniques, fractography and interpretation

Lintner, Arthur; Pippan, Reinhard; Schloffer, Martin; Hohenwarter, Anton

doi:10.1016/j.engfracmech.2021.108081

Cited by 11 publications

(3 citation statements)

References 29 publications

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“…Because of the differences in the evaluation methods, the effects of strain rates on the fracture resistance remain controversial. Lintner et al 46 demonstrate increased fracture toughness for titanium aluminides under high loading rates. Chaouadi and Puzzolante 47 have reported similar conclusions from the Charpy test of steel specimens.…”

Section: Introductionmentioning

confidence: 98%

Measuring J‐R curve under dynamic loading conditions using digital image correlation

Chen

Qian

2023

Fatigue Fract Eng Mat Struct

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This article describes a convenient method to quantify the dynamic J‐R curve through digital image correlation (DIC). The DIC approach, verified through numerical and experimental results for single edge notched bend (SE(B)) specimens, quantifies the dynamic J‐R curve during the drop‐weight tearing test (DWTT). The proposed method enables consistent measurement of the J‐integral and the amount of crack extension solely from the DIC measured displacement on the specimen surface, which facilitates direct comparison of fracture toughness under different strain rates. The results demonstrate enhanced Mode‐I fracture resistance of metallic materials under increased strain rates.

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Section: Introductionmentioning

confidence: 98%

Measuring J‐R curve under dynamic loading conditions using digital image correlation

Chen

Qian

2023

Fatigue Fract Eng Mat Struct

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“…[4] Therefore, to ensure the secure utilization of large equipment, the enhancement of low-temperature toughness is crucial as it signifies the overall resistance of the materials to brittle fracture failure. [5,6] In general, for HSLA steels, the lowtemperature toughness is upgraded via adjusting the matrix structure, such as refining the grain, regulating precipitation, [7] controlling crystallographic texture, [8] or optimizing the grain boundary character, [9] so as to improve the low-temperature toughness. For example, Wu et al [10] successfully optimized the microstructure type and texture proportion of ultraheavy EH47 steel plate at 1/2 thickness utilizing inter-pass cooling technology, resulting in a significant improvement in its low-temperature impact toughness.…”

Section: Introductionmentioning

confidence: 99%

“…[ 4 ] Therefore, to ensure the secure utilization of large equipment, the enhancement of low‐temperature toughness is crucial as it signifies the overall resistance of the materials to brittle fracture failure. [ 5,6 ]…”

Section: Introductionmentioning

confidence: 99%

The Low‐Temperature Toughness Improvement of High‐Strength Low‐Alloy Steel Due to the Microstructural Changes Caused by the Reheating/Rolling Temperature

Liu,

Zhao,

Tian

et al. 2024

steel research int.

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Herein, the microstructure, low‐temperature toughness, and fracture characteristics of high‐strength low‐alloy (HSLA) steel prepared by various thermomechanical control processes are systematically studied. Three different reheating/rolling temperatures are designed to obtain microstructures with different prior austenite grain sizes: 20.12 μm (S810), 27.58 μm (S910), and 35.19 μm (S1010). After hot rolling, S810 steel with smaller prior austenite grain size can provide high‐density deformed grain boundaries that promote ferrite phase transformation. The S910 and S1010 steels predominantly undergo bainite transformation as the prior austenite grain size and rolling temperature increase. Also, excellent low‐temperature toughness is obtained by reducing the reheating/rolling temperature (i.e., S810 steel), reflecting that Charpy impact energy of the core of the steel plate is 118.53 J at −120 °C. High performances is mainly attributed to the higher ferrite content, grain refinement, lower dislocation density, and higher proportion of high‐angle grain boundaries. Furthermore, fracture morphology analysis demonstrates that the S810 steel exhibits ductile fracture and noticeable plastic deformation at −120 °C, while S910 and S1010 steels exhibit brittle fracture and rapid crack propagation. These findings manifest the applicability of the suggested technique in preparing HSLA steel with excellent low‐temperature toughness.

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Achieving material diversity in wire arc additive manufacturing: Leaping from alloys to composites via wire innovation

Yi,

Jia,

Ding

et al. 2024

International Journal of Machine Tools and Manufacture

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Quasi-static and dynamic fracture toughness of a γ-TiAl alloy: Measurement techniques, fractography and interpretation

Cited by 11 publications

References 29 publications

Measuring J‐R curve under dynamic loading conditions using digital image correlation

Measuring J‐R curve under dynamic loading conditions using digital image correlation

The Low‐Temperature Toughness Improvement of High‐Strength Low‐Alloy Steel Due to the Microstructural Changes Caused by the Reheating/Rolling Temperature

Achieving material diversity in wire arc additive manufacturing: Leaping from alloys to composites via wire innovation

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