Results 31 to 40 of about 1,666 (239)
Journal of Materials Research and Technology, 2023 The heat input is the most critical factor in pulsed Nd:YAG laser welding and affects the microstructure and mechanical behavior of the welded alloys. NiTi alloy has been used for various applications such as medical equipment and MEMS due to its unique ...
Ali Rasouli, Homam Naffakh-Moosavy
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Evaluation of residual stress near the weld overlay cladding by welding and post-weld heat treatment
Welding International, 2010 Austenitic stainless steel is welded as a cladding on the inner surface of a reactor pressure vessel (RPV) made of low alloy steel. In order to assess the structural integrity of the RPV precisely, the residual stress distribution caused by weld-overlay cladding and post-weld heat treatment (PWHT) is evaluated.
UDAGAWA, Makoto +3 more
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Advanced 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
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Metals, 2022 In this study, 2024 aluminum alloy was diffusion bonded to identify the effect of the bonding temperature, applied pressure, and heating time on the microstructure, hardness, and bonding strength.
Meng-Ting Chiang +5 more
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Advanced Engineering Materials, EarlyView.This study demonstrates how optimizing laser power, scanning speed, and hatching distance in laser powder bed fusion can boost the productivity of Inconel 718 manufacturing by up to 29% while maintaining mechanical integrity. The work delivers a validated process window and cost–time analysis, offering industry‐ready guidelines for efficient additive ...
Amir Behjat +7 more
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Study on Welding Process of Solid Phase Welding by Post Heat Treatment
Journal of the Japan Welding Society, 1971 固相圧接における後熱温度,後熱時間,接合変形度の影響を検討した結果,次のような結論を得た.1.後熱処理による接合状況の進行過程は,後熱温度,後熱時間,接合変形度によって左右され,アレニウスの式を満足する.2.後熱初期の回復現象によって起る接合部に残留する弾性応力の緩和と,さらには後続する再結晶現象によって,接合境界の原子の移動,再配列が進み接合強さは向上する.3.接合境界状態の改善と母材の軟化現象との総合効果によって,継手の機械的性質は決定し,材質,接合変形度,温度によって定まるほぼ一定の後熱時間で最大値がえられた.4.後熱温度が高くなると,空洞の球状化および集合が起る結果,軟化によって低下した接合強さに再び増加が認められ,接合変形度の差の影響はなくなる傾向にある.
Hashimoto, Tatsuya, Ohashi, Osamu
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Cathodic Cage Plasma Deposition of Nanostructured Cu–Fe–Se Coatings on Poly(methyl Methacrylate)
Advanced Engineering Materials, EarlyView.Nanostructured Cu–Fe–Se coatings are deposited on PMMA by a modified cathodic cage plasma process, enabling low‐temperature deposition on polymer substrates. A transition from discontinuous to compact morphology is observed with temperature, with optimal properties at 200°C, where improved CuFeSe2‐type bonding, lowest sheet resistance, and favorable ...
V. S. S. Sobrinho +8 more
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Journal of Materials Research and Technology, 2020 Effect of post-weld heat treatment on the intergranular corrosion of ENiCrFe-7 weld overlay cladding materials was investigated. The results showed that Cr-rich precipitates occured in the dendrites and grain boundaries, and Cr-depletion areas appeared ...
P.L. Guo, L.G. Ling
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Ultrasmall High‐Entropy Materials: Nanoscale Effects, Synthesis, and Mechanistic Insights
Advanced Functional Materials, EarlyView.This review article focuses on sub‐10 nm high‐entropy materials that combine nanoscale design with complex compositions for next‐generation applications. ABSTRACT Ultrasmall high‐entropy nanomaterials (USHENMs, <10 nm) merge multicomponent chemistry with size‐dependent effects, forming a distinct class of materials with unprecedented properties.
Yueyue He +5 more
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Metals, 2019 This paper investigated the microstructure and mechanical properties of a friction-stir-welded beryllium-copper alloy, which is difficult to weld with conventional fusion welding processes.
Yeongseok Lim +2 more
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