Results 41 to 50 of about 20,057 (255)

TiN-containing high-heat-input welding steels: Optimizing Ti/N ratio and precipitation temperature for enhanced low-temperature impact toughness in coarse-grained heat-affected zones

Journal of Materials Research and Technology
To enhance the low-temperature impact toughness of the coarse-grained heat-affected zone (CGHAZ) in high-heat-input welding steels, TiN-containing steels with tailored Ti and N contents were designed.
Junjie Hao, Chao Wang, Hua Duan, Zhu Yan, Guo Yuan, Guo-dong Wang   +5 more
doaj   +1 more source

Impact Toughness Modification of NIST Low-Energy Charpy Verification Specimens for Testing at Room Temperature

Journal of Research of the National Institute of Standards and Technology, 2017
The possibility for the National Institute for Standards and Technology (NIST) to certify Charpy reference specimens for testing at room temperature (21 °C ± 1 °C) instead of −40 °C was investigated in a previous study, in which a slightly increased likelihood of specimen jamming was observed at the low-energy level (13 J to 20 J). Moreover, there is a
Enrico, Lucon, Ray L, Santoyo
openaire   +2 more sources

Influence of equal-channel angular extrusion on impact toughness of aluminum and brass at room and low temperatures [PDF]

International Journal of Mechanical and Materials Engineering, 2014
Abstract Background Equal-channel angular extrusion is a severe plastic deformation process that can be used for grain refinement to improve material properties of bulk metals. In this paper, the effect of equal-channel angular extrusion on the impact toughness of aluminum 1100 and brass C26000 was investigated.
Wang, Jyhwen, Zhu, Huanlin, Sudhakar, K Vadiraja, Price, Angie Hill   +3 more
openaire   +1 more source

Fatigue Crack Initiation and Growth in Nanocrystalline Ni at Multiple Length‐Scales

Advanced Engineering Materials, EarlyView.
Overview of miniaturized in situ SEM fatigue setup and resultant fatigue crack growth data for nanocrystalline Ni. The presented study focuses on the analysis of fatigue crack growth rate (FCGR) in focused ion beam‐notched microcantilevers prepared from nanocrystalline (NC) Ni as a model material.
Igor Moravcik, Alexander Jelinek, Markus Alfreider, Jutta Luksch, Anton Hohenwarter, Florian Schaefer, Christian Motz, Daniel Kiener   +7 more
wiley   +1 more source

High‐Temperature Nanoindentation of Metals: Assessing Thermal Drift, Frame Compliance, and Chemical Composition Effects on the Reported Mechanical Properties

Advanced Engineering Materials, EarlyView.
Do not let thermal drift and instrument artifacts deceive high‐temperature nanoindentation results. We compare classical Oliver–Pharr and automatic image recognition analyses across steels and a Ni alloy to quantify these effects. Accounting for artifacts reveals systematic softening with temperature, while Cr and Ni additions boost resistance ...
Velislava Yonkova, Steffen Brinckmann, Ruth Schwaiger   +2 more
wiley   +1 more source

Effect of Post-Weld Heat Treatment on -20℃ Impact Toughness of Heat Affected Coarse Grain Zone of Steel 07MnCrMoVR

Teshugang, 2020
The microstructure and properties of the heat affected coarse grain zone of steel 07MnCrMoVR with post¬weld heat treated at 460 ~ 660 °C for 2 h are analyzed by means of optical microscope, scanning microscope, transmission electron microscope and impact
冯路路, 乔文玮, 鲁修宇, 周峰
doaj  

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

Current Status and Challenges in Data Collection for Aerospace Coatings Deposited by Plasma Spraying

Advanced Engineering Materials, EarlyView.
An innovative approach has been integrated into the GRENAT project to optimize plasma spraying and coating performance. Raw materials are accelerated and melted in the plasma generated by torches, creating coatings. Monitoring sensors collect process data which are combined with ex situ characterization data.
Lila Randriamananjara, Vincent Rat, Quentin Dubreuil, Patrice Valorge, Simon Goutier, Alain Denoirjean, Olivier Messe, Céline Ruelle, Jean‐Philippe Poli   +8 more
wiley   +1 more source

Electrochemical Behavior of Flame‐Sprayed Sc‐Doped AlCoCrFeMo High‐Entropy Alloy Coatings in 3.5% Sodium Chloride Solution

Advanced Engineering Materials, EarlyView.
Scandium (Sc)‐doped AlCoCrFeMo HEA coatings are fabricated via flame spraying with 0.1, 0.3, and 0.5 wt% Sc additions. Among these, the HEA‐Sc0.3 coating exhibits the highest corrosion resistance, indicated by a more positive corrosion potential and lower current density.
Pankaj Kumar, Akash Vyas, Mohammad Aatif Qazi, Nashit Jalal, Maria Ophelia Jarligo, Mostafa Yakout, Jing Liu, André McDonald   +7 more
wiley   +1 more source

Development of 10.9 Grade 32CrB4 Quenched and Tempered Round Steel for Fasteners [PDF]

Teshugang
There is an urgent need to develop low-cost， high-strength， and toughness grades of steel for domestic wind power fasteners in order to enhance the competitiveness of the industrial chain and fully participate in market competition.
Peng　Feng, Li　Xu, Li　Bopeng, Zhang　Yue, Wang　Zhanzhong, Guo　Shibei
doaj   +1 more source