Results 71 to 80 of about 25,129 (223)

Study parameters of the rayleigh wave in the titanium alloy VT6 [PDF]

, 2017
During processing and use, the surface alloy will have hydrogen embrittlement occur affecting the mechanical properties of metals. Thus, control of hydrogen embrittlement is of particular importance.
Инь Хуавэй
core  

Bio‐Based Polyurethanes: Mechanical Performance, Structure–Property Relationships, and Future Directions

Journal of Polymer Science, EarlyView.
This review examines bio‐based polyurethanes from renewable feedstocks, focusing on structure‐property relationships governing mechanical performance. It analyzes reinforcement strategies, benchmarks against petrochemical counterparts, and explores future directions, including non‐isocyanate routes and circular economy integration for sustainable high ...
Khaled Chawraba, Hussein Medlej, Mohamad Sakr, Akram Hijazi, Abrar Hussain   +4 more
wiley   +1 more source

Influence of Higher Tramp Element Level on the Weldability of Automotive Steels

steel research international, EarlyView.
The use of green recycled steels is constantly expanding in the automotive industry. The increase in tramp elements resulting from the recycling of steel is problematic. Tramp elements can lead to a negative influence on the weldability. To understand the influence, the welding properties of three green steels are characterized. The potential limits of
Elias Gebhard Vogt, Patrick Veyel, Lars Gebel, Christian Meyer, Robert Thomas, Michael Thomas, Christoph Herrmann   +6 more
wiley   +1 more source

Hydrogen environment embrittlement [PDF]

Hydrogen embrittlement is classified into three types: internal reversible hydrogen embrittlement, hydrogen reaction embrittlement, and hydrogen environment embrittlement.
Gray, H. R.
core   +1 more source

Pre‐failure behavior of continuous post‐tensioned and post‐grouted beam in case of tendon failure

Structural Concrete, EarlyView.
Abstract Grouted tendons are a common solution for long‐span bridge structures. The grout provides bond and corrosion protection for prestressing steel. However, if the grouting is defective, corrosion of the prestressing steel may initiate and eventually lead to tendon failure.
Olli Asp, Joonas Tulonen, Anssi Laaksonen   +2 more
wiley   +1 more source

Hydrogen Embrittlement of Aluminum: the Crucial Role of Vacancies

, 2005
We report first-principles calculations which demonstrate that vacancies can combine with hydrogen impurities in bulk aluminum and play a crucial role in the embrittlement of this prototypical ductile solid.
Efthimios Kaxiras, Gang Lu, H. K. Birnbaum, P. Ehrhart   +3 more
core   +1 more source

Processing Stabilization of Polyolefin Recyclates Using Alditols in Combination With α‐Tocopherol: A Sustainable Alternative to Phosphites

Journal of Vinyl and Additive Technology, EarlyView.
A novel bio‐based stabilizer system significantly improves the quality of polyolefin recyclates during multiple recycling cycles. ABSTRACT This study introduces a novel bio‐based stabilizer system for polyolefin recyclates that combines alditols with small amounts of α‐tocopherol as a sustainable alternative to conventional phosphite additives. The aim
Kim Hao Ng, Jan‐Hendrik Arndt, Elke Metzsch‐Zilligen, Rudolf Pfaendner   +3 more
wiley   +1 more source

Day‐Ahead Optimal Scheduling of Integrated Energy Systems Considering Diversified Hydrogen Utilisation

IET Smart Energy Systems, EarlyView.
Integrated energy systems (IES) facilitate multi‐energy complementarity and efficient energy utilization. This study focuses on an IES with electricity, heating, cooling, and hydrogen loads, the proposed method can achieve a balance between system energy consumption, carbon emissions, and operational economy.
Hua Xie, Zhe Liu, Dongfang Jiang, Su Zhang, Yiru Shi, Jun Li   +5 more
wiley   +1 more source

Effect of heat treatment on microstructure and hydrogen embrittlement of additively manufactured and cast 18Ni300 maraging steel

Journal of Materials Research and Technology
The microstructure is significantly different between cast and additively manufactured 18Ni300 maraging steel due to the different manufacturing principles. The resulting differences in hydrogen embrittlement susceptibility need to be clarified. Electron
Meng Zhao, Sicong Shen, Huanchun Wang, Liuhui Niu, Jinguang Shi, Zhen Chen, Xuanjun Wang, Bingheng Lu   +7 more
doaj   +1 more source

Numerical Modeling of Hydrogen‐Assisted Cracking With Phase Field Regularized Cohesive Zone Model and Penalty‐Based Moving Hydrogen Boundary Condition

Fatigue &Fracture of Engineering Materials &Structures, EarlyView.
ABSTRACT The degradation of metallic materials due to hydrogen embrittlement (HE) poses critical challenges for structural reliability. Phase‐field models offer an energy‐based approach that does not require predefined crack paths and automatically determines crack initiation, growth, and coalescence.
Shaymaa Merheb, Dmytro Vasiukov, Modesar Shakoor, Hugo Heyraud, Daniella Guedes Sales, Philippe Rohart, Samir Assaf, Salim Chaki   +7 more
wiley   +1 more source