Results 61 to 70 of about 11,349 (316)

Microstructural Evolution and Vacancy Defect Formation in Mn–Mo–Ni RPV Steel Under Low Cycle Fatigue: Insights From EBSD and PALS

Advanced Engineering Materials, EarlyView.
Low‐cycle fatigue damage in Mn–Mo–Ni reactor pressure vessel steel is examined using a combined electron backscatter diffraction and positron annihilation lifetime spectroscopy approach. The study correlates texture evolution, dislocation substructure development, and vacancy‐type defect formation across uniform, necked, and fracture regions, providing
Apu Sarkar, Dhanadeep Dutta, G. Bharat Reddy   +2 more
wiley   +1 more source

Constraint effect on corrosion fatigue crack growth behavior of A100 ultrahigh strength steel

Journal of Aeronautical Materials
Ultrahigh strength steel has been widely used to manufacture aircraft landing gear and other load-bearing structures，which is prone to corrosion fatigue failure when serving in harsh marine environment.
LI Yizhe, HUANG Hailiang, BIAN Guixue, WANG Andong, WANG Xi   +4 more
doaj   +1 more source

Relation between the Fatigue and Fracture Ductile-Brittle Transition in S500 Welded Steel Joints

Metals, 2022
The formation and propagation of cracks occur through irreversible dislocation movements at notches, material defects, and grain boundaries. Since this process is partly thermally controlled, the resistance to dislocation movements at low temperatures ...
Finn Sallaba, Franziska Rolof, Sören Ehlers, Carey Leroy Walters, Moritz Braun   +4 more
doaj   +1 more source

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

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, Tomáš Babinský, Jan Lars Riedel, Wen Hao Kan, Aijun Huang, Martin Heilmaier, Ivo Šulák   +6 more
wiley   +1 more source

Effect of Microstructure on the Corrosion Fatigue Crack Growth of Low and Medium Steels

Advances in Materials Science and Engineering, 2022
This article studies the effect of microstructure on the corrosion fatigue crack growth behavior of low and medium carbon steels. 45 steel and 15CrMo were selected and five typical microstructures were obtained by different heat treatment processes.
Jing Wang, Yan Zhang, Chunting Yu, Bo Zhao   +3 more
doaj   +1 more source

Fatigue crack growth rate of brazed joint.

QUARTERLY JOURNAL OF THE JAPAN WELDING SOCIETY, 1985
It is well known that fatigue crack propergates accompanying a small scale yielding at the crack tip. In filler metal between base metals of brazed joint, fatigue crack growth rate depends possively on the degree of restraint of crack tip plastic deformation by base metals, because the width of crack tip plastic deformation zone is nearly the same with
Sasabe, Ken, Okane, Isao
openaire   +2 more sources

Productivity‐Driven Optimization of Laser Powder Bed Fusion Parameters for IN718 Superalloy: Process Control, Microstructure, and Mechanical Properties

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, Guido Barale, John Stavridis, Ehsan Norouzi, Jin‐Yoo Suh, Dong‐Ik Kim, Luca Iuliano, Abdollah Saboori   +7 more
wiley   +1 more source

The Effect of Fatigue Damage on the Corrosion Fatigue Crack Growth Mechanism in A7N01P-T4 Aluminum Alloy

Metals, 2023
A7N01P-T4 aluminum alloy plates for high-speed trains will experience a certain amount of fatigue damage under alternating loads. Three groups of samples, P0 (no fatigue damage), P1 (loading stress 30 MPa), and P2 (loading stress 70 MPa), were created ...
Wenjing Chen, Wei Lu, Guoqing Gou, Liwen Dian, Zhongyin Zhu, Junjun Jin   +5 more
doaj   +1 more source

Additive Manufacturing of Continuous Fibre Reinforced Composites: Process, Characterisation, Modelling, and Sustainability

Advanced Engineering Materials, EarlyView.
Additive manufacturing provides precise control over the placement of continuous fibres within polymer matrices, enabling customised mechanical performance in composite components. This article explores processing strategies, mechanical testing, and modelling approaches for additive manufactured continuous fibre‐reinforced composites.
Cherian Thomas, Amir Hosein Sakhaei
wiley   +1 more source

A modelling technique for calculating stress intensity factors for structures reinforced by bonded straps. Part II: Validation [PDF]

, 2010
In this second part of the two-part paper validation of the 2D FE modelling technique described in the first part is presented for a range of test configurations.
Boscolo, Marco, Zhang, Xiang
core   +1 more source