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Article

10 Citations

2,040 Views

18 Pages

On the Competition between Intergranular and Transgranular Failure within 7xxx Al Alloys with Tailored Microstructures

Sutao Han,
Matthieu B. Lezaack,
Grzegorz Pyka,
Nelson Netto,
Aude Simar,
Magd Abdel Wahab and
Florent Hannard

Materials2023, 16(10), 3770;https://doi.org/10.3390/ma16103770

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16 May 2023

7xxx aluminium series reach exceptional strength compared to other industrial aluminium alloys. However, 7xxx aluminium series usually exhibit Precipitate-Free Zones (PFZs) along grain boundaries, which favour intergranular fracture and low ductility...

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Article

1 Citations

1,198 Views

28 Pages

A Crystal Plasticity Phase-Field Study on the Effects of Grain Boundary Degradation on the Fatigue Behavior of a Nickel-Based Superalloy

Pengfei Liu,
Zhanghua Chen,
Xiao Zhao,
Jianxin Dong and
He Jiang

Materials2025, 18(14), 3309;https://doi.org/10.3390/ma18143309

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14 July 2025

Grain boundary weakening in high-temperature environments significantly influences the fatigue crack growth mechanisms of nickel-based superalloys, introducing challenges in accurately predicting fatigue life. In this study, a dislocation-density-bas...

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