Results 31 to 40 of about 18,757 (259)

Microstructure and Tensile-Shear Properties of Resistance Spot-Welded Medium Mn Steel

Metals, 2018
The medium Mn steels are gaining increasing attention due to their excellent combination of mechanical properties and material cost. A cold-rolled 0.1C5Mn medium Mn steel with a ferrite matrix plus metastable austenite duplex microstructure was ...
Qiang Jia, Lei Liu, Wei Guo, Yun Peng, Guisheng Zou, Zhiling Tian, Y. Norman Zhou   +6 more
doaj   +1 more source

Microstructural Evolution and Vacancy Defect Formation in Mn–Mo–Ni RPV Steel Under Low Cycle Fatigue: Insights From EBSD and PALS

Advanced Engineering Materials, EarlyView.
Low‐cycle fatigue damage in Mn–Mo–Ni reactor pressure vessel steel is examined using a combined electron backscatter diffraction and positron annihilation lifetime spectroscopy approach. The study correlates texture evolution, dislocation substructure development, and vacancy‐type defect formation across uniform, necked, and fracture regions, providing
Apu Sarkar, Dhanadeep Dutta, G. Bharat Reddy   +2 more
wiley   +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

Experimental evidence for “double-edged sword” effect of the fibrous δ-ferrite on mechanical properties: a case study of Fe-5.95Mn-1.55Si-1.0Al-0.055C medium-Mn steel

Journal of Materials Research and Technology, 2022
An ingenious thermo-mechanical treatment process was utilized on a Fe-5.95Mn-1.55Si-1.0Al-0.055C medium-Mn steel to investigate the effect of fibrous δ-ferrites on mechanical properties.
Shu Yan, Tianle Li, Zigan Xu, Taosha Liang, Sai Wang, Xianghua Liu   +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

Effects of mechanical and chemical heterogeneity on the strength-ductility synergy of a heterostructured medium Mn steel

Journal of Materials Research and Technology
A medium Mn steel with both mechanical and chemical heterogeneities is designed in this study, demonstrating an excellent combination of high strength and ductility.
Yuming Zou, Haokun Zhu, Qihan Gao, Kaichao Xie, Jialin Chen, Hua Ding, Zhengyou Tang, Zhouhua Jiang   +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

External and Internal Cracking Caused by Heat Treatment in Laser Powder Bed Fusion‐Fabricated Inconel 738LC Components

Advanced Engineering Materials, EarlyView.
Manufacturing problems such as heat treatment‐induced cracking hinder the widespread application of the laser powder bed fusion (LPBF) process to superalloys. In this study, cracks in the LPBF components of Inconel 738LC superalloy are characterized after heat treatment at various temperature ranges, revealing two distinct cracking behaviors.
Kosuke Kuwabara, Masahiro Kusano, Ayako Ikeda, Toshio Osada, Makoto Watanabe   +4 more
wiley   +1 more source

Effect of heating temperature on the hydrogen embrittlement susceptibility in hot stamped medium-Mn steel

工程科学学报
Medium-Mn steel with M3 microstructural characteristics (multiphase, multiscale, and metastable) is a promising third-generation automotive steel owing to its remarkable combination of ultrahigh strength and ductility.
Xiaoli ZHAO, Yongjian ZHANG, Cunyu WANG, Weijun HUI   +3 more
doaj   +1 more source

Enhancing Fatigue Crack Growth Resistance in Heterostructured Aluminum Bimetals by Tailored Interface Design

Advanced Engineering Materials, EarlyView.
Different Al/Al bimetals with a single engineered interface reveal how mechanical mismatch governs fatigue crack growth under cyclic loading. Additionally, loading–unloading–reloading tests link the microyielding behavior to the fatigue crack growth resistance, while crack‐path analysis reveals toughening mechanisms at the interface, highlighting ...
Sebastian Vollath, Philip Manuel Pohl, Heinz Werner Höppel   +2 more
wiley   +1 more source