Results 121 to 130 of about 621,630 (239)

Revisiting Stability Criteria in Ball‐Milled High‐Entropy Alloys: Do Hume–Rothery and Thermodynamic Rules Equally Apply?

open access: yesAdvanced Engineering Materials, Volume 27, Issue 6, March 2025.
The stability criteria affecting the formation of high‐entropy alloys, particularly focusing in supersaturated solid solutions produced by mechanical alloying, are analyzed. Criteria based on Hume–Rothery rules are distinguished from those derived from thermodynamic relations. The formers are generally applicable to mechanically alloyed samples.
Javier S. Blázquez   +5 more
wiley   +1 more source

A Workflow to Accelerate Microstructure‐Sensitive Fatigue Life Predictions

open access: yesAdvanced Engineering Materials, EarlyView.
This study introduces a workflow to accelerate predictions of microstructure‐sensitive fatigue life. Results from frameworks with varying levels of simplification are benchmarked against published reference results. The analysis reveals a trade‐off between accuracy and model complexity, offering researchers a practical guide for selecting the optimal ...
Luca Loiodice   +2 more
wiley   +1 more source

Thermodynamic Pathways of Nonequilibrium Solidification in Wire‐Arc Additive Manufacturing Fe‐Based Multicomponent Alloy Structures

open access: yesAdvanced Engineering Materials, EarlyView.
Geometry‐driven thermal behavior in wire‐arc additive manufacturing (WAAM) influences microstructural evolution during nonequilibrium solidification of a chemically complex Fe–Cr–Nb–W–Mo–C nanocomposite system. By comparing different deposits configurations, distinct entropy–cooling rate correlations, segregation, and carbide evolution are revealed ...
Blanca Palacios   +5 more
wiley   +1 more source

Mechanistic Effects of Preparation Methods on the Composition, Structure, and Cr(Ⅵ) Removal Performance of S-nZVI

open access: yesYankuang ceshi
Sulfidized nanoscale zero-valent iron (S-nZVI) has received significant attention as a highly reactive and selective environmental remediation material. However, the mechanisms by which different preparation methods and aerial oxidation processes affect ...
Zongding CHEN   +7 more
doaj   +1 more source

Thermomechanical Fatigue and Creep–Fatigue Interaction of Inconel 718 Additively Manufactured by Laser Beam Powder Bed Fusion

open access: yesAdvanced Engineering Materials, EarlyView.
Thermomechanical fatigue tests of laser beam powder bed fusion (PBF‐LB) Inconel 718 show that the additively manufactured material reaches almost the lifetimes of conventionally‐rolled material under no‐dwell conditions. Introducing dwell times at the maximum temperature markedly reduces the lifetimes due to pronounced grain boundary sliding associated
Stefan Guth   +6 more
wiley   +1 more source

化学还原-沉淀法对地下水中Cr(Ⅵ)和Ni2+的去除效果研究

open access: yesGongye shui chuli
针对工业废水渗滤导致的地下水六价铬〔Cr(Ⅵ)〕和镍(Ni2+)复合污染问题,采用硫酸亚铁(FeSO4·7H2O)化学还原法结合氢氧化物沉淀法开展修复研究。以Cr(Ⅵ)-Ni2+复合污染的模拟地下水为处理对象,系统考察了模拟水样初始pH、FeSO4·7H2O投加量、沉淀反应pH和离子沉淀顺序对Cr(Ⅵ)和Ni2+去除效能的影响,得到两种优化后的去除方案,即在pH为7左右的原水体系中,按Cr(Ⅵ)与FeSO4·7H2O质量比1∶18投加FeSO4·7H2O,将Cr(Ⅵ)还原为Cr(Ⅲ)后调节体系pH至9 ...
牛建敏   +7 more
doaj   +2 more sources

响应面法优化粉末活性炭去除水中的Cr(Ⅵ)

open access: yesGongye shui chuli, 2017
研究了粉末活性炭(PAC)吸附去除水溶液中的Cr(Ⅵ),利用基于单因素实验的响应面法优化了Cr(Ⅵ)的去除条件。结果表明,模型能很好地拟合实验数据。当Cr(Ⅵ)初始质量浓度为50 mg/L时,由响应面法得到的Cr(Ⅵ)最佳去除条件是:pH=3、吸附时间为21.56 min、PAC投加质量浓度为2.40 g/L,相应的Cr(Ⅵ)的去除率为86.00%。实验值和预测值的相对偏差仅为1.07%,证实模型合理可行。
王文强, 王爱丽
doaj   +2 more sources

Affecting the Properties of Copper–Graphene Electroconductive Composite by Severe Plastic Deformation

open access: yesAdvanced Engineering Materials, EarlyView.
Copper‐based composites enhanced with carbon feature convenient mechanical properties and favorable electric conductivity. Processing via deformation and thermomechanical treatments can introduce advantageous microstructures further enhancing their performance. Herein, copper–graphene powder‐based composites are directly consolidated via rotary swaging
Radim Kocich   +3 more
wiley   +1 more source

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