Results 101 to 110 of about 196,218 (321)

Creep: time‐dependent brittle deformation in rocks [PDF]

, 2009
The characterization of time‐dependent brittle rock deformation is fundamental to understanding the long‐term evolution and dynamics of the Earth’s crust. The chemical influence of pore water promotes time‐dependent deformation through stress corrosion
Heap, M.J.
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Self‐Seeded Nucleation of PET in a Benign Solvent Yields a High Modulus Aerogel With Ultra‐Low Thermal Conductivity

Advanced Materials, EarlyView.
A new benign solvent (1,3‐diphenylacetone) enables a simple, safe, and sustainable dissolution and gelation method to convert waste PET into low density, monolithic aerogels with high mechanical strength (E = 20 MPa) and remarkably low thermal conductivity (k = 21.9 to 28.9 mW/m·K).
Kira R. Baugh, Garrett F. Godshall, Glenn A. Spiering, Isabela Trindade Coutinho, Alejandro A. Rodriguez, Katherine J. Wood, Aiyana Gonzalez‐Arellano, Sadeq Malakooti, Stephanie L. Vivod, Robert B. Moore   +9 more
wiley   +1 more source

Numerical Study on Ductile-to-Brittle Transition of Steel and its Behavior under Residual Stresses [PDF]

, 2019
The transition of fracture mode from ductile to brittle (DBT) is a crucial phenomenon of structural materials, e.g. body centered cubic (BCC) metals, which are normally brittle at low temperatures or high loading rates, become ductile at high ...
Li, Yang
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A Study of Fracture Mechanisms in RAFM Steel in the Ductile to Brittle Transition Temperature Regime

Procedia Engineering, 2014
AbstractThe fracture behaviour of a Reduced Activation Ferritic Martensitic Steel (RAFM) has been studied within the Ductile to Brittle Transition Temperature (DBTT) regime. The DBTT has been determined by ASTM E 1921 based reference temperature approach under dynamic loading condition. The dynamic reference temperature (T0dy) was found to be − 33.8°C.
Moitra, A., Dasgupta, Arup, Sathyanarayanan, S., Sasikala, G., Albert, S.K., Saroja, S., Bhaduri, A.K., Kumar, E. Rajendra, Jayakumar, T.   +8 more
openaire   +1 more source

Advances in Magnesium‐Based Thermoelectrics: A Critical Review

Advanced Materials, EarlyView.
Magnesium‐based thermoelectric materials have emerged as promising candidates for low‐to‐mid‐temperature energy conversion due to their abundance, low cost, and competitive performance. This review summarizes recent advances in Mg3X2, MgAgSb, and Mg2X systems, covering transport mechanisms, fabrication strategies, stability challenges, and device ...
Li‐Min Zhang, Li Zhang, Nan‐Hai Li, Yan‐Ling Yang, Xiao‐Lei Shi, Zhi‐Gang Chen   +5 more
wiley   +1 more source

The ductile-brittle transition of a zirconium alloy due to hydrogen [PDF]

, 2010
[[abstract]]Due to the notch effect, the room temperature ductile-brittle transition was found at a lower hydrogen content between 30 and 40 ppm. A room temperature ductile-brittle transition of reduction of area was observed between 101 kPa and 1010 kPa
Huang, J.-H.;Huang, S.-P.;Ho, C.-S.
core   +1 more source

From the Discovery of the Giant Magnetocaloric Effect to the Development of High‐Power‐Density Systems

Advanced Materials Technologies, EarlyView.
The article overviews past and current efforts on caloric materials and systems, highlighting the contributions of Ames National Laboratory to the field. Solid‐state caloric heat pumping is an innovative method that can be implemented in a wide range of cooling and heating applications.
Agata Czernuszewicz, Yaroslav Mudryk, Jun Cui, Lucas Griffith, Duane D. Johnson, Julie Slaughter   +5 more
wiley   +1 more source

Architected Inverse Nacre Hydrogels With High Strength and Crack‐Insensitive Toughness

Advanced Science, EarlyView.
Hydrogels hold promise for biomedical and engineering applications, yet their practical use is fundamentally limited by the strength‐toughness trade‐off and poor fatigue resistance. In this study, a bioinspired inverse nacre architecture constructed via a scalable thermo‐calendering process is introduced, which overcomes these classic limitations ...
Haidi Wu, Qin Su, Cheng Guan, Biwang Pan, Wenjie Hu, Jun Yan, Yifan Feng, Longcheng Tang, Xuewu Huang, Jiefeng Gao, Wancheng Gu   +10 more
wiley   +1 more source

Sustainable Materials Design With Multi‐Modal Artificial Intelligence

Advanced Science, EarlyView.
Critical mineral scarcity, high embodied carbon, and persistent pollution from materials processing intensify the need for sustainable materials design. This review frames the problem as multi‐objective optimization under heterogeneous, high‐dimensional evidence and highlights multi‐modal AI as an enabling pathway.
Tianyi Xu, Tianshuo Wei, Yan Ge, Bo Peng, Yue Li, Maolin Wang, Peng Wen, Chao Yang, Ye Wei   +8 more
wiley   +1 more source

BRITTLE TO DUCTILE TRANSITION IN SILICON. [PDF]

, 1986
The brittle to ductile transition in silicon is studied by four-point bend testing of specimens containing controlled flaws. A characteristic increase in fracture stress is observed at the transition temperature which is directly correlated to the ...
Samuels, J, Roberts, Steve, Roberts, SG
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