Results 41 to 50 of about 55,499 (201)

Significance of Annealing Twins in Laser Ultrasonic Measurements of Grain Size in High-Strength Low-Alloy Steels

Applied Sciences, 2023
In this study, we demonstrate the significance of austenite annealing twin boundaries when calibrating laser ultrasonic measurements for gauging austenite grain size in situ during the thermomechanical processing of high-strength low-alloy steels. Simple
Tuomo Nyyssönen, Mikael Malmström, David Lindell, Anton Jansson, Johan Lönnqvist, Linda Bäcke, Bevis Hutchinson   +6 more
doaj   +1 more source

Premartensite to martensite transition and its implications on the origin of modulation in Ni2MnGa ferromagnetic shape memory alloy

, 2015
We present here results of temperature dependent high resolution synchrotron x-ray powder diffraction study of sequence of phase transitions in Ni2MnGa.
Barman, S. R., Bednarcik, J., Felser, C., Pandey, Dhananjai, Singh, Sanjay   +4 more
core   +1 more source

Nucleation of austenite in mechanically stabilized martensite by localized heating [PDF]

, 2013
The nucleation of bcc austenite in a single crystal of a mechanically stabilized 2H-martensite of Cu-Al-Ni shape-memory alloy is studied. The nucleation process is induced by localized heating and observed by optical microscopy.
Ball, John M., Koumatos, Konstantinos, Seiner, Hanus   +2 more
core   +2 more sources

Effect of Cooling Rate and Austenite Deformation on Hardness and Microstructure of 960MPa High Strength Steel

Science and Engineering of Composite Materials, 2020
In order to develop 960MPa grade high strength steel, the effects of cooling rate and austenite deformation on the hardness and the microstructure of high strength steel has been studied by Scanning Electron microscope (SEM), Transmission Electron ...
Yang Xiong, Yu Wei, Tang Di, Shi Jiaxin, Li Yuqian, Fan Jia, Mei Donggui, Du Qiming   +7 more
doaj   +1 more source

Nanoscale austenite reversion through partitioning, segregation, and kinetic freezing: Example of a ductile 2 GPa Fe-Cr-C steel

, 2012
Austenite reversion during tempering of a Fe-13.6Cr-0.44C (wt.%) martensite results in an ultrahigh strength ferritic stainless steel with excellent ductility.
Choi, P., Jiménez, J. A., Ponge, D., Raabe, D., Wittig, J., Yuan, L.   +5 more
core   +1 more source

Magnetostriction of Heusler Ferromagnetic Alloy, Ni₂MnGa_0.88Cu_0.12, around Martensitic Transition Temperature

Metals, 2023
In this study, magnetostriction measurements were performed on the ferromagnetic Heusler alloy, Ni2MnGa0.88Cu0.12, which is characterized by the occurrence of the martensitic phase and ferromagnetic transitions at the same temperature.
Takuo Sakon, Koki Morikawa, Yasuo Narumi, Masayuki Hagiwara, Takeshi Kanomata, Hiroyuki Nojiri, Yoshiya Adachi   +6 more
doaj   +1 more source

Object kinetic Monte Carlo study of the effect of grain boundaries in martensitic Fe-Cr-C alloys [PDF]

, 2016
Fe-Cr-C alloys with chromium concentrations in the range from similar to 2 to 12 wt.% form ferritic-martensitic structures by rapid cooling from the austenite state already in the presence of relatively low carbon concentrations.
Allen, Bortz, Bruemmer, Chiapetto, Chiapetto, del Rio, Domain, Flewitt, Hernández-Mayoral, Hernández-Mayoral, Jansson, Jansson, Karthikeyan, Kim, Konstantinovic, Malerba, Malerba, Matijasevic, Morito, Morito, Morito, Nichols, Olsson, Stoller, Stoller, Stoller, Tanigawa, Terentyev, Terentyev, Yang, Young, Zhurkin   +31 more
core   +2 more sources

Microstructure and Mechanical Properties of M50 Steel by Combining Cold Rolling with Austempering

Metals, 2020
M50 steel is widely used in the manufacture of high-end bearing steel for aeroengine shafts in the aerospace industry [...]
Dongsheng Qian, Yuangeng He, Feng Wang, Yun Chen, Xiaohui Lu   +4 more
doaj   +1 more source

Effect of drawing and annealing on the microstructure and mechanical properties of 304 austenitic stainless steel wire

Materials Research Express, 2021
Plastic deformation at room temperature, and the proceeding heat treatments, are important processes for optimizing the microstructure and mechanical properties of austenitic stainless steel. The microstructure and mechanical properties of cold-drawn 304
Qinhua Xu, Jianxin Zhu, Yong Zong, Lihua Liu, Xiaoyong Zhu, Fuen Zhang, Baifeng Luan   +6 more
doaj   +1 more source

Crack propagation and strain-induced α’-martensite transformation in selective laser melting 316L stainless steels

Frontiers in Materials, 2023
At present, in-situ monitoring of metal cracking and propagation is still a challenge. In this work, we used in-situ tensile tests with precast cracks of selective laser melting (SLM) and conventionally manufactured (CM) 316L stainless steels (SSs) to ...
Zhiheng Tan, Maolei Gui, Zhiping Zhou, Jinlong Lv, Shuye Zhang, Zhuqing Wang   +5 more
doaj   +1 more source