Results 31 to 40 of about 846 (168)

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

Austenite grain growth and hot deformation behavior in a medium carbon low alloy steel

Journal of Materials Research and Technology, 2020
To examine the austenite grain growth behavior and kinetics under isothermal austenitization process in a low alloy medium carbon forged steel, heat treatments at different temperatures (1150, 1175, 1200, and 1260 °C) and times (5, 15, and 25 min) were ...
A. Chamanfar, S.M. Chentouf, M. Jahazi, L.-P. Lapierre-Boire   +3 more
doaj   +1 more source

The effect of the austenite grain refinement on the tensile and impact properties of cast Hadfield steel [PDF]

Materials Research, 2018
This paper studied the effect of the austenite grain refinement on the tensile and impact properties of a cast Hadfield steel (12 % Mn, 1.2 %C and 0.65 % Si). The austenite grain refinement was obtained by hafnium inoculation.
Bianka Nani Venturelli, Eduardo Albertin, Cesar Roberto de Farias Azevedo   +2 more
doaj   +2 more sources

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

Analysis on Cause of Mixed Grain Size of SCM435 Low Alloy Medium Carbon Cold Heading Steel Φ12 mm Wire Rod and Process Improvement

Teshugang, 2022
According to specification of SCM435 steel hot rolled wire rod, the austenite grain size is ≥7 grade and the reduction of area is N≥ 35%. The test results show that in the original process the mixed grain size structure of 中12 mm SCM435 steel wire is ...
董庆, 阮士朋, 李敏锐
doaj  

Deformation behavior of retained austenite and its effect on plasticity based on in-situ EBSD analysis for transformable ferritic stainless steel

Journal of Materials Research and Technology, 2022
The relationship of deformation behavior of retained austenite with its characteristics for transformable ferritic stainless steel by Q&P treatment was systematically investigated using in-situ EBSD analysis.
Fei Gao, Zilong Gao, Qiyong Zhu, Fuxiao Yu, Zhenyu Liu   +4 more
doaj   +1 more source

EFFECT OF ZIRCONIUM ON THE AUSTENITIC GRAIN SIZE IN IRON AND STEEL

Tetsu-to-Hagane, 1958
Ferrozirconium was added to Fe and steel containing O, N, and C to study the effect of Zr nitride, oxide, carbide, and solid solutions on the austenitic grain size refining and coarsening temperature. (Rev. Metal Lit., 19: No. 9, Sept.
Akira Adachi, Kiyoshi Mizukawa, Hirokazu Omoto, Noboru Hiraoka   +3 more
openaire   +2 more sources

Tailoring Functional Properties of Ti–Ni–Cu Shape Memory Alloy Thin Films for MEMS Actuators

Advanced Engineering Materials, EarlyView.
A comprehensive study of critical parameters required to develop well‐performing Ti–Ni–Cu thin film shape memory alloy microactuators is provided. Materials science and device integration aspects are integrated by addressing structural and physical relationships using complementary characterization techniques as well as a practical fabrication solution
Elaheh Akbarnejad, Aleksander Kostka, Gowtham Arivanandhan, Yujiao Li, Alan Savan, Manfred Kohl, Alfred Ludwig   +6 more
wiley   +1 more source

Influence of Austenite Grain Size on Mechanical Properties after Quench and Partitioning Treatment of a 42SiCr Steel

Metals, 2019
This paper examines how the initial austenite grain size in quench and partitioning (Q-P) processes influences the final mechanical properties of Q-P steels.
Sebastian Härtel, Birgit Awiszus, Marcel Graf, Alexander Nitsche, Marcus Böhme, Martin F.-X. Wagner, Hana Jirkova, Bohuslav Masek   +7 more
doaj   +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