Results 81 to 90 of about 25,614 (293)

Modeling of Microsegregation and Homogenization of 6xxx Al-Alloys Including Precipitation and Strengthening During Homogenization Cooling

, 2019
Control of the homogenization process is important in obtaining high extrudability and desirable properties in 6xxx aluminum alloys. Three consecutive steps of the process chain were modeled.
Sarafoglou, Panagiota I., Gregory N. Haidemenopoulos, Fanikos, Ioannis A., Panagiota I. Sarafoglou, Aristeidakis, John S., John S. Aristeidakis, Haidemenopoulos, Gregory N., Serafeim, Alexandros, Ioannis A. Fanikos, Alexandros Serafeim   +9 more
core   +2 more sources

Enhancing Strength and Ductility of a Ni-26.6Co-18.4Cr-4.1Mo-2.3Al-0.3Ti-5.4Nb Alloy via Nanosized Precipitations, Stacking Faults, and Nanotwins

Nanomaterials
The addition of Co to Ni-based alloys can reduce the stacking fault energy. In this study, a novel Ni-26.6Co-18.4Cr-4.1Mo-2.3Al-0.3Ti-5.4Nb alloy was developed by increasing the Co addition to 26.6 wt.%.
Jingjing Zhang, Yongfeng Shen, Wenying Xue, Zhijian Fan   +3 more
doaj   +1 more source

Creep Properties and Deformation Mechanism of Additively Manufactured NiAl‐CrMo Composites

Advanced Engineering Materials, EarlyView.
Additively manufactured NiAl‐CrMo composites contain numerous interfaces and cell boundaries that control their creep response. At 700°C under high applied stress, creep is dominated by dislocation‐controlled power‐law mechanisms. At 800°C–900°C and lower stresses, creep is primarily diffusion‐controlled along cell boundaries.
Jan Vollhüter, Andreas Bezold, Johan Westraadt, Katharina Fiegl, Subham Chattoraj, Benjamin Wahlmann, Carolin Körner, Michael Mills, Mathias Göken, Steffen Neumeier   +9 more
wiley   +1 more source

Precipitation strengthening in extruded AZ61 magnesium alloys during heat treatment process [PDF]

, 2013
Magnesium alloys, in particular the commercial wrought alloy, AZ61 has been increasingly considered as an attractive material in the transportation industry. The objective of this paper is to determine the microstructure change and Mg Al precipitation in
Jusoff, Kamaruzaman, Din, Abdul Talib, Selamat, Mohd Zulkefli, Mohd Daud, Mohd Ahadlin, Jusoff, Kamaruzzaman   +4 more
core   +1 more source

Al-5Cu-0.3Sc-B₄C Nanocomposites: Microstructural Refinement, Strengthening Mechanisms, and Corrosion Behavior

Nanomaterials
In this study, Al-5Cu-0.3Sc nanocomposites reinforced with 0–20 wt.% B4C were successfully fabricated using a combined melt-spinning, mechanical alloying, and sintering route.
Seyit Çağlar, Cengiz Temiz
doaj   +1 more source

Enhanced Strength and Corrosion Resistance of Ti‐13Nb‐12Ta‐10Zr‐4Sn Alloy by Aging Treatment

Advanced Engineering Materials, EarlyView.
This work systematically investigates the effect of aging treatment on mechanical properties and corrosion behavior of vacuum arc‐melted Ti‐13Nb‐12Ta‐10Zr‐4Sn alloy. Owing to the increased α″ martensite, strength and corrosion resistance were significantly enhanced by aging treatment.
Yuhua Li, Rong Zhao, Qian Zhang, Haojie Wang, Yujing Liu, Lai‐Chang Zhang   +5 more
wiley   +1 more source

Effect of Zn/Mg ratio on precipitation and strengthening of Al–Zn–Mg alloys after aging

Journal of Materials Research and Technology
The influence of Zn/Mg ratio (1.2-3.5) on the precipitation and strengthening effect of Al–Zn–Mg (Zn + Mg = 10 wt%) alloys aged at 130 °C was investigated by hardness test, tensile test at room temperature combined with microstructure examination by ...
Qingqian Li, Yuzhang Li, Shengdan Liu, Mengchu Yang, Keda Jiang, Shitong Fan, Shourong Zhao, Shaofei Nie   +7 more
doaj   +1 more source

Precipitation behavior of V- N microalloyed steel at the normalizing process

工程科学学报, 2015
The precipitation behavior of V-N microalloyed steel at the normalizing process was studied by physicochemical phase analysis and high resolution transmission electron microscopy.
SU Hang, CHAI Xi-yang, PAN Tao, YANG Cai-fu, LIU Yi-zhi   +4 more
doaj   +1 more source

In Situ Micromechanical Study of Bimodal γ′–γ″ Precipitate Assemblies in Ni–Cr–Al–Nb Superalloy

Advanced Engineering Materials, EarlyView.
A Ni–Cr–Al–Nb superalloy with a bimodal γ′–γ″ precipitate distribution is developed. Composite precipitate assemblies form through heterogeneous nucleation, effectively impeding dislocation motion. Micropillar compression reveals high strength at room and elevated temperatures, governed by precipitate shearing, with coupled faulting mechanisms ...
Ujjval Bansal, Tae‐Hyeok Kang, Pyuck‐Pa Choi, Subin Lee, Christoph Kirchlechner   +4 more
wiley   +1 more source

Experimental Characterization and Constitutive Modeling of the Effect of Prior Inelastic Strain on the Viscoplastic Behavior of AD730 at 700 °C

Advanced Engineering Materials, EarlyView.
This study shows that superalloys used in aircraft engine disks become much more prone to deformation at high temperatures if they have been strained during manufacturing. This effect increases with the level of prior strain but eventually reaches a limit.
Fabio Machado Alves da Fonseca, Patrick Villechaise, Malik Durand, Arnaud Longuet, Florent Coudon, Loïc Signor, Julien De Jaeger, Dominique Eyidi, Nathalie Bozzolo, Jonathan Cormier   +9 more
wiley   +1 more source