Results 81 to 90 of about 1,320 (253)

Numerical Simulation of Creep Damage and Life Prediction of Superalloy Turbine Blade

Mathematical Problems in Engineering, Volume 2015, Issue 1, 2015., 2015
Creep caused failure is an important failure mode of the turbine blade. A numerical approach of life assessment of the superalloy turbine blade is proposed in the present paper based on the Lemaitre‐Chaboche creep damage model. Material damage is introduced into each element based on the ANSYS APDL function, and the creep damage effect is considered ...
Donghuan Liu, Haisheng Li, Yinghua Liu, Chenfeng Li   +3 more
wiley   +1 more source

The fundamental material design of low thermal expansion coefficient Ni-Fe-Cr based superalloy [PDF]

, 2016
超超临界火力发电技术有着二氧化碳排放量少、发电效率高的优点，世界各国均在大力研究该技术。下一代容量越大，参数越高（温度和压力越高）的超超临界机组会排放越少的温室气体且发电效率更高，但是服役环境的更加苛刻，也要求所用材料的性能应更加优异。 在超超临界技术火力发电所用的材料中，镍基高温合金具有较高的强度以及优异的抗氧化腐蚀等性能，是其中最重要的合金之一，但其有两个不利因素：（1）热膨胀系数（CTE）较高，其与9-12%Cr的耐热钢焊接或者组装时产生较大的热应力，易造成焊接开裂或装配失效；（2）价格较高 ...
池天惠
core  

MECHANICS OF MATERIALS [PDF]

, 2015
The fatigue-life of a polycrystalline superalloy under symmetrical cyclic strain controlled loading at a temperature of 650 degrees C is investigated by numerical simulations on the micro-level, focusing on the inhomogeneous evolution of plastic ...
Brocks W, Ju JW, Li ZH, Zhang KS, Zhang, KS (reprint author), Guangxi Univ, Coll Civil & Architectural Engn, Key Lab Disaster Prevent & Struct Safety, Nanning 530004, Peoples R China., 白以龙   +5 more
core   +1 more source

Effects of Shot‐Blasting and Induction Hardening on the Fatigue Strength of Hot‐Forged Wheel Bearing Hubs

Fatigue &Fracture of Engineering Materials &Structures, Volume 48, Issue 8, Page 3353-3367, August 2025.
ABSTRACT Hot‐forged wheel bearing hubs are manufactured using a complicated fabrication process chain to obtain the desired microstructure and mechanical properties in different zones that experience varying local stress states. The different process steps modify the surface roughness and the residual stresses distribution and therefore affect the ...
Vo‐Huu‐Thuc Nguyen, Etienne Pessard, Daniel Bellett, Viet‐Duc Le, Sébastien Guillaume, Simon Thibault, Franck Morel   +6 more
wiley   +1 more source

Microstructure Modifications and Associated Corrosion Improvements in GH4169 Superalloy Treated by High Current Pulsed Electron Beam

Journal of Nanomaterials, Volume 2015, Issue 1, 2015., 2015
The surface of the nickel‐based superalloy GH4169 was subjected to high‐current pulsed electron beam (HCPEB) treatment. The microstructural morphologies of the material were analysed by means of optical microscope (OP), scanning electron microscope (SEM), and transmission electron microscope (TEM).
Yichang Su, Guangyu Li, Liyuan Niu, Shengzhi Yang, Jie Cai, Qingfeng Guan, Gang Ji   +6 more
wiley   +1 more source

Experimental on ultrahigh frequency vibration fatigue of GH4169 nickel-based superalloy

Journal of Aeronautical Materials
To address the very high cycle fatigue（VHCF）issue of GH4169 nickel-based superalloy，which is widely utilized in aero-engines，a fatigue specimen subjected to 20 kHz ultrahigh frequency vibration is designed and tested utilizing a piezoelectric ultrasonic ...
WANG Zhaohan, PAN Kai, CHEN Yonghui, HANG Chao, WANG Yongjie, YAN Qun   +5 more
doaj   +1 more source

A novel simulation for the design of a low cycle fatigue experimental testing programme [PDF]

, 2016
This paper proposes an innovative concept for the design of an experimental testing programme suitable for causing Low Cycle Fatigue crack initiation in a bespoke complex notched specimen.
Beesley, Ross, Chen, Haofeng, Hughes, Martin   +2 more
core   +1 more source

A Review of High‐Temperature Molten Salt for Third‐Generation Concentrating Solar Power

Energy Science &Engineering, Volume 13, Issue 2, Page 456-474, February 2025.
Our review explores molten salts suitable for third‐generation concentrating solar power (CSP) systems, focusing on carbonates, chlorides, and sulfates. We examine their thermal properties and explore how nanoparticles enhance their heat storage capacity.
Xu Liu, Yuan Zhong, Jinli Li, Huaiyou Wang, Min Wang   +4 more
wiley   +1 more source

Performance of two different constitutive models and microstructural evolution of GH4169 superalloy

Mathematical Biosciences and Engineering, 2019
The hot compression tests of GH4169 superalloy were performed in the deformation temperature range of 970 to 1150 ℃ and at the strain rate range of 0.001 to 10 s⁻¹. The flow stress is dependent on temperature and strain rate. The flow stresses were respectively predicted by Arrhenius-type and artificial neural network (ANN) models, and the predicted ...
Xiawei Yang, Wenya Li, Yaxin Xu, Xiurong Dong, Kaiwei Hu, Yangfan Zou   +5 more
openaire   +3 more sources

Linear friction welding of dissimilar Ni-based superalloys: microstructure evolution and thermo-mechanical interaction

Journal of Materials Research and Technology, 2021
Linear friction welding (LFW) technology, as an advanced manufacturing approach to fabricate the bimetallic turbine blisks, is receiving increasing attention from aerospace industries.
Peihao Geng, Guoliang Qin, Hong Ma, Jun Zhou, Ninshu Ma   +4 more
doaj   +1 more source