Results 61 to 70 of about 112,709 (303)

Preliminary Metallurgical Investigation of Copper-Based Artifacts at Tepe Sagzabad in Qazvin Plain, Iran (1500-800 BC) [PDF]

Iranian Journal of Archaeological Studies, 2011
Tepe Sagzabad, a site situated on the Qazvin Plain of north-central Iran, was excavated from 1970 to 1998 by the Institute ofArchaeology of Tehran University. Recent excavations by H.
Mohammad Mortazavi, Ahmad Salehi Kakhki, Mohammad Ali Golozar, Hassan Tala’i   +3 more
doaj   +1 more source

Solid‐State Diffusion and Intermetallic Phase Formation in Roll‐Bonded Mg–Zn Composites With Kirigami‐Patterned Inlay

Advanced Engineering Materials, EarlyView.
Mg–Zn composites with a thickness of 0.21 mm were fabricated using roll bonding of a kirigami‐patterned Mg alloy inlay within a Zn matrix. Thermal activation following this process led to the formation of tailored intermetallic structures, which provided the composite with enhanced flexural strength.
Yaroslav Frolov, Oleksandr Bobukh, Christian Klose, Florian Nürnberger, Hans Jürgen Maier   +4 more
wiley   +1 more source

Table 5. Re-Os isotopic age data of molybdenite from the Yangla copper deposit [PDF]

, 2012
Table 5.
Yue-Dong Liu (7975817), Liu, Jia-Jun, Jia-Jun Liu (615824), Cao, Ye, Xi-An Yang (7975808), Bing-Yu Gao (7975814), Huan Wang (109286), Han, Si-Yu, Wang, Huan, Gao, Bing-Yu, Si-Yu Han (7975811), Yang, Xi-An, Liu, Yue-Dong, Ye Cao (849948)   +13 more
core   +1 more source

Introduction to the workshop

IpoTESI di Preistoria
The workshop, which took place on October 7, 2024, at the Department of History and Culture of the University of Bologna, examined the theme of so-called megalithic walls.
Maurizio Cattani
doaj   +1 more source

Time‐Dependent Oxidation and Scale Evolution of a Wrought Co/Ni‐Based Superalloy

Advanced Engineering Materials, EarlyView.
This study shows how a new wrought Co/Ni‐based superalloy resists oxidation at 800 ∘$^\circ$C. The oxide scale changes from rough, fast‐growing spinel to a dense, protective chromia–alumina layer. Atom probe analysis reveals tiny refractory‐rich bubbles at the interface that mark the transition to long‐term, diffusion‐controlled protection ...
Cameron Crabb, Zachary T. Kloenne, Samuel R. Rogers, Chi Hang Dominik Kwok, Mark C. Hardy, Michele S. Conroy, David Dye   +6 more
wiley   +1 more source

Prehistoric copper tools from the territory of Serbia [PDF]

Journal of Mining and Metallurgy. Section B: Metallurgy, 2009
Around four hundreds prehistoric copper tools and weapons have been recorded in the territory of Serbia so far. They had been in use for a rather long period of time - from the end of the early phase of the Vinča culture until the Middle Bronze Age and ...
Antonović D.
doaj   +1 more source

Hydrogen‐Assisted Fracture of Iron‐Based Fe–Ni–Al Alloys

Advanced Engineering Materials, EarlyView.
Principal relations and fracture mechanisms of single‐phase and precipitate‐strengthened Fe–Ni–Al alloys subjected to prior electrochemical hydrogen charging are identified. The mechanisms of hydrogen effect on strength and microhardness are discussed, including hydrogen‐induced increase in microhardness and the role of hydrogen in fracture behavior ...
Nataliya Yadzhak, Olha Zvirko, Rostyslav Leshchak, Hryhoriy Nykyforchyn   +3 more
wiley   +1 more source

Influence of Test Temperature and Test Frequency on Fatigue Life of Aluminum Alloy EN AW‐2618A

Advanced Engineering Materials, EarlyView.
The influence of test temperature and test frequency on the fatigue life of EN AW‐2618A is investigated. High‐cycle fatigue tests are performed at different test temperatures and frequencies on the 1000 h/230°C overaged state. Both test parameters reduce fatigue life due to time‐dependent damage mechanisms.
Ying Han, Julian M. Rosalie, Jan Radners, Mauro Madia, Philipp von Hartrott, Birgit Skrotzki   +5 more
wiley   +1 more source

Aging effect on the mobility and bioavailability of copper in soil [PDF]

Journal of Environmental Sciences, 2009
Aging effect on the mobility and bioavailability of copper (Cu) was investigated using a spiked soil with different incubation periods from 3 to 56 d. Wheat was planted and earthworms were cultured separately in the incubated soils. The mobility of Cu in soil was evaluated by a chemical fractionation scheme and the toxicity and bioavailability were ...
Anxiang, Lu, Shuzhen, Zhang, Xiangyang, Qin, Wenyong, Wu, Honglu, Liu   +4 more
openaire   +2 more sources

Soft Mechanical‐Electrical Logic Using Liquid Metal‐Filled 3D‐Printed Architectures

Advanced Engineering Materials, EarlyView.
We present 3D‐printed soft mechanical–electrical logic elements that use liquid metal–filled silicone tubes actuated by thermoplastic polyurethane/polylactic acid (TPU/PLA) architectures to produce Boolean operations. Complementary normally open and normally closed unit cells perform repeatable binary transitions and can be combined into more complex ...
Christoph Lehmann, Ryan Kalgreen, Laura M. Comella   +2 more
wiley   +1 more source