Results 71 to 80 of about 7,970 (297)

Karl Popper and the Mechanisms of Hydrogen Embrittlement

Advanced Engineering Materials, EarlyView.
Representation of the beginning of loss of ductility rather than embrittlement. Small concentrations of hydrogen in a diffusible form within iron are well‐established to harm the mechanical integrity of steels. There are theories that attempt to explain the pernicious role of hydrogen.
H. K. D. H. Bhadeshia
wiley   +1 more source

Effect of hot stamping and quenching & partitioning process on microstructure and mechanical properties of ultra-high strength steel

Materials Research Express, 2021
In order to better achieve the purpose of automobile lightweight, hot stamping and quenching & partitioning (HS-Q&P) process has become a hot research focus. This process includes a hot stamping followed by a controlled quenching and partitioning process.
Cainian Jing, Daomin Ye, Jingrui Zhao, Tao Lin, Cong Wu, Qiteng Lei   +5 more
doaj   +1 more source

Microstructure Evolution of a VMnFeCoNi High‐Entropy Alloy After Synthesis, Swaging, and Annealing

Advanced Engineering Materials, EarlyView.
The synthesis and processing (rotary swaging and annealing) of the novel VMnFeCoNi alloy is investigated, alongside the estimation of the grain size effect on hardness. Analysis of a wide grain size range of recrystallized microstructures (12–210 µm) reveals a low annealing twin density.
Aditya Srinivasan Tirunilai, Zeki Ayrildi, Buse Şen, Maik Rajkowski, Mathias Redondo Garcia, Markus Stricker, Guillaume Laplanche   +6 more
wiley   +1 more source

Process optimization of quenching and partitioning by machine learning aided with orthogonal experimental design

Materials Research Express
Owing to a balance between toughness and strength, quenching and partitioning (Q&P) is promising in steel industry. However, for a new material or a new process, it remains challenging how to get the best parameters in low cost way.
Na Dai, Jian Li, Hai Qin, Guolin He, Pengfei Li, Zhenghua Wu, Shanlin Wang   +6 more
doaj   +1 more source

The Effect of Quenching and Partitioning (Q&P) Processing on the Microstructure, Hardness, and Corrosion Resistance of SAE 9254 Spring Steel

Metals
In the present work, the effect of quenching and partitioning cycles on the microstructure, hardness, and corrosion behavior of SAE 9254 spring steel was investigated. Initially, the critical phase transformation temperatures were analyzed by dilatometry.
Alisson Denis Carros Nizes, Silvano Leal dos Santos, Renato Altobelli Antunes   +2 more
doaj   +1 more source

Phase Transformations in Steels during Quenching and Partitioning Heat Treatment [PDF]

, 2016
Quenching and Partitioning (Q&P) processed steel is a promising candidate for the third-generation advanced high strengths steel(AHSS), where considerable amount of carbon-enriched austenite can be obtained in the steel microstructure.
Hu, Y. (author)
core  

Slip Localization Intensification Mediated by Grain Boundary Sliding in a Polycrystalline Nickel‐Based Superalloy

Advanced Engineering Materials, EarlyView.
The temperature dependence of fatigue behavior in nickel‐based superalloys is investigated through high‐resolution measurements of plastic localization. While increasing temperature reduces localization and enhances fatigue performance in René 88DT, Inconel 718 exhibits a sharp degradation at intermediate temperature due to intensified slip ...
M. Calvat, D. Anjaria, I. Woo, C. Bean, D. Texier, J. C. Stinville   +5 more
wiley   +1 more source

Quenching and Partitioning (Q&P) Processing of Martensitic Stainless Steels [PDF]

, 2018
Austenite was stabilized in the martensitic stainless steel grade AISI 420 by means of quenching and partitioning (Q&P) processing. The effects of quenching temperature on the microstructure and mechanical properties were investigated.
Javad Mola, De Cooman, BC
core   +1 more source

Recycling of NiTi Shape Memory Alloys: Fundamental and Technological Aspects of a Vacuum Induction Melting Processing Route

Advanced Engineering Materials, EarlyView.
The present study investigates recycling of NiTi shape memory alloys via vacuum induction melting. An ingot was synthesized from elemental Ni and Ti and subjected to three subsequent remelting cycles. Remelting increases process durations and impurity levels and adversely affects microstructures and functional properties.
Sakia Sophia Noorzayee, Son Tung Mai, Sarath Menon, Braulio Gadiel Sánchez Ortega, Ralf Drautz, Alexander Kauffmann, Gunther Eggeler, Jan Frenzel   +7 more
wiley   +1 more source

Quenching and partitioning of plate steel: development of design methodologies [PDF]

, 2018
Includes bibliographical references.2018 Summer.Quenching and partitioning (Q&P), a new heat steel treatment concept to develop high strength martensitic microstructures with retained austenite, has been implemented industrially to make sheet products ...
Stewart, Rachael A.
core