Results 31 to 40 of about 171,915 (303)

On the exceptional damage-tolerance of gradient metallic materials [PDF]

, 2020
An experimental study is described on the fracture toughness and micro-mechanisms associated with the initiation and propagation of cracks in metallic nickel containing marked gradients in grain size, ranging from ∼30 nm to ∼4 μm.
Cao, R, Li, Y, Lin, Y, Pan, J, Ritchie, RO, Sweet, A, Yu, Q   +6 more
core  

Direct observation via in situ heated stage EBSD analysis of recrystallization of phosphorous deoxidised copper in unstrained and strained conditions [PDF]

, 2020
Recrystallization of phosphorous deoxidised copper used for strength critical applications at elevated temperatures was investigated by means of in situ heated stage EBSD analysis using a Gatan Murano heated stage mounted within a Carl Zeiss Sigma FEGSEM
Kotadia, Hiren, Li, Zushu, Masters, Iain, Taylor, Scott   +3 more
core   +1 more source

In-situ SEM-EBSD investigation of the low-cycle fatigue deformation behavior of Inconel 718 at grain-scale

Journal of Materials Research and Technology, 2023
The low-cycle fatigue (LCF) deformation behavior of the Inconel 718 (IN718) specimen with micro-notch was investigated by an in-situ fatigue test inside a scanning electron microscope (SEM) combined with electron backscattered diffraction (EBSD).
Guanghao Guo, Wenxiang Jiang, Xuan Liu, Jutian Chen, Longyu Li, Jin Wang, Yuefei Zhang, Ze Zhang   +7 more
doaj   +1 more source

Probabilistic Modeling of Slip System-Based Shear Stresses and Fatigue Behavior of Coarse-Grained Ni-Base Superalloy Considering Local Grain Anisotropy and Grain Orientation

Metals, 2019
New probabilistic lifetime approaches for coarse grained Ni-base superalloys supplement current deterministic gas turbine component design philosophies; in order to reduce safety factors and push design limits.
Benedikt Engel, Lucas Mäde, Philipp Lion, Nadine Moch, Hanno Gottschalk, Tilmann Beck   +5 more
doaj   +1 more source

Crystal plasticity simulation of the effect of grain size on the fatigue behavior of polycrystalline Inconel 718

, 2018
A microstructure-based model that accounts for the effect of grain size has been developed to study the effect of grain size on the fatigue life of Inconel 718 alloys.
Cruzado, A., LLorca, J., Lucarini, S., Segurado, J.   +3 more
core   +1 more source

Effect of crystallographic properties on low cycle fatigue crack initiation at elevated temperature for Ni-based directionally solidified superalloy

Nihon Kikai Gakkai ronbunshu, 2016
Low cycle fatigue tests at elevated temperature were conducted on a Ni-based directionally solidified superalloy subjected to transverse loading. To investigate the effect of the arrangement and the orientation of crystal grains on the crack initiation ...
Takashi YOKOYAMA, Masaru SEKIHARA
doaj   +1 more source

Abnormal grain growth in thin wires of commercially pure iron with anisotropic microstructure

Journal of Materials Research and Technology, 2020
This work reports the behavior of annealed commercially pure cold-drawn thin iron wires. Primary recrystallization is complete after holding for 180 s at 1123 K. After recrystallization, grain growth takes place within the central region but not close to
D.R. Almeida Jr., P.R. Rios, D. Zöllner, H.R.Z. Sandim   +3 more
doaj   +1 more source

Effect of Extrusion Texture on Corrosion Behaviour of D16T Drill Pipe in 3.5% NaCl Solution

International Journal of Electrochemical Science, 2018
The role of texture in the initiation and expansion of corrosion pits for a D16T aluminium drilling pipe in 3.5% NaCl solution was investigated by immersion and electrochemical tests.
Xiaohong Wang, Zhengwei Peng, Shiyu Zhong, Guorong Wang, Qiaogang Hu, Yuanhua Lin   +5 more
doaj   +1 more source

Micromechanical investigation of the influence of defects in high cycle fatigue [PDF]

, 2014
This study aims to analyse the influence of geometrical defects (notches and holes) on the high cycle fatigue behaviour of an electrolytic copper based on finite element simulations of 2D polycrystalline aggregates.
GUERCHAIS, Raphaël, MOREL, Franck, ROBERT, Camille, SAINTIER, Nicolas   +3 more
core   +6 more sources

Strain Hardening of Low-Carbon Steel in the Area of Jerky Flow

Nauka ta progres transportu, 2021
Purpose. The aim of this work is to assess the effect of ferrite grain size of low-carbon steel on the development of strain hardening processes in the area of nucleation and propagation of deformation bands. Methodology.
I. O. Vakulenko, D. M Bolotova, S. V Proidak, B Kurt, A. E Erdogdu, H. O Chaikovska, K Asgarov   +6 more
doaj   +1 more source