Results 71 to 80 of about 33,636 (265)

Study on the failure behaviour of Advanced High Strength Steel considering stamping history [PDF]

MATEC Web of Conferences
The stamping history has a significant impact on the structural performance of ultra-high strength steel parts. In this paper the material hardening and fracture characteristics of QP1180-EL ultra-high strength steel were tested through experimental ...
Zhang Ji-chao, Lian Changwei, Han Fei
doaj   +1 more source

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

Multimodal Data‐Driven Microstructure Characterization

Advanced Engineering Materials, EarlyView.
A self‐consistent autonomous workflow for EBSP‐based microstructure segmentation by integrating PCA, GMM clustering, and cNMF with information‐theoretic parameter selection, requiring no user input. An optimal ROI size related to characteristic grain size is identified.
Qi Zhang, Santiago Benito, Özge Özgün, Sebastian Weber, Markus Stricker   +4 more
wiley   +1 more source

Creep fatigue interaction at high temperature in C630R ferritic/martensitic heat-resistant steel

Journal of Materials Research and Technology
The study investigated the creep-fatigue interaction behavior, fracture mechanism, and microstructure evolution of C630R ferritic/martensitic heat-resistant steel at 630 °C and 1% strain amplitude.
Kailun Ding, Zhengxin Tang, Xikou He, Xitao Wang, Jinshan He, Jiajia Qiu   +5 more
doaj   +1 more source

Investigation of the Flow Behaviour of Martensitic Steel at Elevated Temperatures Via Uniaxial Tensile Tests [PDF]

Archives of Metallurgy and Materials
In recent years, advanced high strength steels have been the main choice of automobile manufacturers due to their excellent strengths and decent formability. In this study, the forming behaviour of a martensitic steel (MART 1200) at elevated temperatures,
N. Sen, T. Civek, O. Elkoca, E. Çevik
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

Achieving high strength-ductility synergy via layer-wise heterogeneous structure of additively manufactured reduced activation ferrite/martensite steel

Materials Research Letters
The next generation of advanced fusion reactors requires high-performance reduced activation ferrite/martensite (RAFM) steel parts. Here, we propose a new process strategy to achieve high strength-ductility synergy of RAFM steel fabricated by laser ...
Zhenyu Chen, Yuhao Zhuo, Yuang Cheng, Yu Song, Zhixin Xia, Chengqi Lu, Xing Zhu, Chuanyang Wang, Qingbo Jia   +8 more
doaj   +1 more source

Hydrogen‐Assisted Fracture of Iron‐Based Fe–Ni–Al Alloys

Advanced Engineering Materials, EarlyView.
Principal relations and fracture mechanisms of single‐phase and precipitate‐strengthened Fe–Ni–Al alloys subjected to prior electrochemical hydrogen charging are identified. The mechanisms of hydrogen effect on strength and microhardness are discussed, including hydrogen‐induced increase in microhardness and the role of hydrogen in fracture behavior ...
Nataliya Yadzhak, Olha Zvirko, Rostyslav Leshchak, Hryhoriy Nykyforchyn   +3 more
wiley   +1 more source

Advanced Forging Techniques for High-Strength Steels

, 2016
—Micro-alloyed steel components are used in automotive industry for the necessity to make the manufacturing process cycles shorter when compared to conventional steel by eliminating heat treatment cycles, so an important saving of costs and energy can be reached by reducing the number of operations.
Dr. Maria Rodriguez, Dr. Liam Chen
openaire   +2 more sources

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