Results 11 to 20 of about 1,508 (264)

A novel dissolution-precipitation mechanism during liquid phase sintering and its strengthening effects in W-Ni-Fe alloys with low W contents

Materials & Design, 2022
W-Ni-Fe alloys with a low W content are a kind of promising tungsten alloys. However, limited results are available, and the responsible mechanism is not known for their dissolution-precipitation behavior, because long-range migration under the low W ...
Yong Han, Yuan Li, Lei Ye, Zhiyuan Du, Zhanggen Liu, Xin Li, Ming-Chun Zhao, Andrej Atrens   +7 more
doaj   +1 more source

Microstructural origin of the superior strength–ductility synergy of γ′-strengthened high-entropy alloy with heterogeneous grain structure and discontinuous precipitation configuration

Journal of Materials Research and Technology, 2023
The pursuit of a superior combination of strength and ductility in metallic materials for structural applications has long been a challenge. Recently, L12 (γ′) precipitation-strengthened high-entropy alloys (HEAs) that undergo direct aging from cold ...
Tae Jin Jang, Ju-Hyun Baek, Jin-Yoo Suh, Alireza Zargaran, Seok Su Sohn   +4 more
doaj   +1 more source

In-situ measurement of the β to α phase transformation kinetics in a Ti-5553 alloy using laser ultrasonics [PDF]

MATEC Web of Conferences, 2020
Ti-5553 alloy (Ti-5Al-5Mo-5V-3Cr wt.%) is one of the newest high strength metastable β-titanium alloys to be used in large section components of aircraft structures. Like other Ti-alloys, Ti-5553 can be strengthened by precipitation of the α-phase during
Rodrigues M. C. M., Garcin T., Militzer M.   +2 more
doaj   +1 more source

Multi-scale-phases coherent precipitation improve the comprehensive performance of heat-resistant Cu alloys

Journal of Materials Research and Technology, 2023
High-temperature destabilization of the strengthening phase and the generation of discontinuous precipitation at grain boundaries are mutual problem in current high-temperature alloys, especially in the novel Cu-based high-temperature alloys.
Y.L. Hu, M. Li, Y.D. Hou, X.N. Li, Z.M. Li, Z.L. Cheng, Y.Y. Shao, Y.H. Zheng, C. Dong   +8 more
doaj   +1 more source

Microstructural evolution and mechanical properties of (FeCoNi)85·84Al7·07Ti7.09 high-entropy alloy by selective laser melting with aging treatment

Journal of Materials Research and Technology, 2023
Faced-centred cubic nanoparticles-strengthened FeCoNiAlTi system high-entropy alloy (HEA) has demonstrated unique mechanical performance advantages with recently developed HEA alloy compositions.
Pengcheng Ji, Zhenhui Wang, Yandong Jia, Dongye Yang, Pan Ma, Wenjun Zhao, Da Li, Yongkun Mu, Gang Wang   +8 more
doaj   +1 more source

Microstructure and Mechanical Properties of a Precipitation‐Strengthened Fe–Al–Nb Alloy

Advanced Engineering Materials, 2023
Fe–Al alloys provide an attractive property profile for applications at temperatures of up to 700 °C. Herein, a Fe–25Al–2Nb (at%) alloy is, manufactured on an application‐relevant scale. Preforms are cast and subsequently forged into a turbine blade shape.
Sarper Nizamoglu, Angelika Gedsun, Alexander Kauffmann, Michael Ghosh, Heiner Michels, Tim Groten, Camelia Schulz, Christoph Breuner, Sascha Seils, Daniel Schliephake, Stephan Laube, Martin Palm, Martin Heilmaier   +12 more
openaire   +4 more sources

Control Technology of Materials and Microstructure Properties for Steam Turbine Blades in Ultra-supercritical Power Plants [PDF]

Teshugang
The research progress and development status of ultra-supercritical steam turbine blade steels and alloys are reviewed. According to the different operating environments， blade materials can be classified into high-temperature blades and last-stage large
Zhao Jiqing, Yang Gang, Liu Zhengdong, He Xikou, Bao Hansheng   +4 more
doaj   +2 more sources

Laser Additive Manufacturing of Oxide Dispersion-Strengthened Copper–Chromium–Niobium Alloys

Journal of Manufacturing and Materials Processing, 2022
Copper is a key material for cooling of thermally stressed components in modern aerospace propulsion systems, due to its high thermal conductivity. The use of copper materials for such applications requires both high material strength and high stability ...
Markus B. Wilms, Silja-Katharina Rittinghaus   +1 more
doaj   +1 more source

SUPERALLOYS: AN INTRODUCTION WITH THERMAL ANALYSIS

Journal of Fundamental and Applied Sciences, 2015
Nickel based superalloys are commonly used materials in the aero industry and more specifically in the hot section of aero engines. These nickel and nickel iron based superalloys are precipitation strengthened alloys with a face centered cubic gamma ...
S. S. Raza
doaj   +1 more source

γ′′ Phase transformation, precipitation hardening, hetero-deformation induced hardening and deformation mechanisms in a Nb-alloyed medium-entropy alloy

Materials & Design, 2023
In present work, a novel γ′′-strengthened Nb-alloyed medium-entropy alloy (MEA) was successfully fabricated and systematically investigated. Our results evidence that the γ′′ phase brings out significant precipitation hardening effect (∼10.2 %volume ...
Wenjie Lu, Xian Luo, Yafeng Wang, Bin Huang, Zhijun Wang, Yanqing Yang   +5 more
doaj   +1 more source