[HTML][HTML] Recent advances in nanomechanical and in situ testing techniques: Towards extreme conditions

D Kiener, M Wurmshuber, M Alfreider… - Current Opinion in Solid …, 2023 - Elsevier
Nanoindentation based techniques were significantly enhanced by continuous stiffness
monitoring capabilities. In essence, this allowed to expand from point-wise discrete …

[HTML][HTML] Fracture dominant in friction stir spot welded joint between 6061 aluminum alloy and galvannealed steel based on microscale tensile testing

T Matsuda, T Ogaki, K Hayashi, C Iwamoto, T Nozawa… - Materials & Design, 2022 - Elsevier
The macroscale mechanical properties of dissimilar joints are generally influenced by the
fracture behavior of joint interface. However, little is known about the dominant factor for the …

A review of selected small specimen test techniques for identifying deformation and failure properties of metallic materials

X Wang, T Zhu, J Zhang, H Ding, S Xiao, L Lu… - Journal of Materials …, 2023 - Springer
Small specimen test techniques (SSTTs), developed for scarce materials, industrial
products, in-service equipment, etc., could be challenging to obtain sufficient materials for …

Role of low-level void swelling on plasticity and failure in a 33 dpa neutron-irradiated 304 stainless steel

HT Vo, D Frazer, AA Kohnert, S Teysseyre… - International Journal of …, 2023 - Elsevier
Radiation damage introduces a wide range of defects in structural materials depending on
the irradiation conditions. Irradiation-induced loops are known to lead to dislocation …

[HTML][HTML] Crack initiation and propagation behavior of dissimilar interface with intermetallic compound layer in Al/steel joint using coupled multiscale mechanical testing

T Matsuda, K Hayashi, C Iwamoto, T Nozawa… - Materials & Design, 2023 - Elsevier
We demonstrate multiscale mechanical testing using miniature and microscale tensile tests
to elucidate the crack initiation and propagation behaviors corresponding to interfacial …

Yield criterion for intergranular void coalescence under combined tension and shear

C Sénac, J Hure, B Tanguy - International Journal of Plasticity, 2024 - Elsevier
Intergranular ductile fracture is a failure mode that may arise in many metallic alloys used in
industrial applications. It manifests as the successive nucleation, growth, and coalescence of …

A threshold density of helium bubbles induces a ductile-to-brittle transition at a grain boundary in nickel

MJ Demkowicz - Journal of Nuclear Materials, 2020 - Elsevier
This paper describes molecular dynamics simulations of fracture along a grain boundary
(GB) in nickel (Ni) decorated with helium (He)-filled bubbles. We find that the quantity …

Microscale tensile test of galvannealed steel/aluminum dissimilar joint for estimation of intrinsic interfacial strength

T Matsuda, T Sano, M Munekane, M Ohata, A Hirose - Scripta Materialia, 2020 - Elsevier
We conduct high-resolution microscale tensile testing of galvannealed steel/Al–Mg–Si alloy
dissimilar joints and find that the interfacial reaction layer is sufficiently strong to induce …

Deformation twinning versus slip in Ni-based alloys, containing Pt2Mo-structured, Ni2Cr-typed precipitates

HT Vo, K Dang, F Teng, M Schneider, BP Eftink… - Materials & Design, 2021 - Elsevier
Nickel-based alloys are extensively used in a wide range of extreme environments because
of their exceptional mechanical properties. The excellent strength of these alloys is derived …

Lamellar aspect-ratio and thickness-dependent strength-ductility synergy in pure nickel during in-situ micro-tensile loading

ZM Wang, YF Jia, KS Li, Y Zhang, JD Cai… - Journal of Materials …, 2023 - Elsevier
In order to overcome the trade-off between strength and ductility in traditional metallic
materials, the gradient lamellar structure was fabricated through an ultrasound-aided deep …