Results 51 to 60 of about 926 (182)

In-situ observations of grain refinement by TiN particles in the simulated coarse-grained heat-affected zone of a high-strength low-alloy steel

工程科学学报, 2016
The effect of grain refinement by TiN particles in the simulated coarse-grained heat-affected zone of a high-strength low-alloy steel was investigated by means of analytical characterization techniques such as in-situ microscopy and electron back ...
WAN Xiang-liang, LI Guang-qiang, WU Kai-ming   +2 more
doaj   +1 more source

Recording Characteristics of Acicular Cobalt-ferrite Tape.

Journal of the Japan Society of Powder and Powder Metallurgy, 1996
Two kinds of acicular cobalt ferrite fine particles which differed in size (long axis : about 1.2μm and 0.4μm) were prepared by conventional sintering method. Then two kinds of acicular cobalt ferrite tapes were fabricated with these fine particles and binder regins.
Nobuyuki Hiratsuka, Satoshi Suzuki, Koichi Kakizaki, Mitsuo Sugimoto   +3 more
openaire   +2 more sources

Comparison of Novel 1 GPa Low‐Carbon, Low‐Alloyed Steel Produced with Simulated and Laboratory‐Scale Thermomechanical Controlled Processes

steel research international, Volume 96, Issue 3, March 2025.
A laboratory‐scale hot‐rolled Ti–Mo–V–Nb steel with 1 GPa tensile strength is produced, and its microstructure and tensile properties are characterized using advanced analysis techniques and tensile testing. A Gleeble 3800 thermomechanical simulator is used to determine a process window. Results show significant differences in mechanical properties and
Olli Nousiainen, Jaakko Hannula, Sami Saukko, Antti Kaijalainen, Jukka Kömi   +4 more
wiley   +1 more source

Influence of Ti-rare earth addition on microstructure and toughness of coarse grain heat-affected zone in C-Mn steel

工程科学学报, 2017
The influences of rare earth (RE) and Ti-RE complex treatment on the microstructures and toughness in the coarse grain heat-affected zone (CGHAZ) of C-Mn steel were investigated using a Gleeble-1500D thermal simulator with input heat energy of 65 kJ·
ZHANG Sheng-hua, SONG Bo, SONG Ming-ming, GAO Qi-rui   +3 more
doaj   +1 more source

The Role of Carbon Content on the Microstructure of Rapidly Solidified Fe–Cr–Ni Duplex Steels

steel research international, Volume 96, Issue 3, March 2025.
In this study, the effect of carbon content on the microstructure of three Fe–Cr–Ni duplex steels produced by rapid solidification is evaluated. In this research, using scanning electron microscopy and transmission electron microscopy for microstructural analyses, it is revealed that carbon additions change the microstructure formation from primary ...
Emanuelle Machado Amaral, Daniela Passarelo Moura da Fonseca, Katia Cristiane Gandolpho Candioto, Angelo Fernando Padilha   +3 more
wiley   +1 more source

Formation of Bainite in a Low‐Carbon Steel at Slow Cooling Rate – Experimental Observations and Thermodynamic Validation

steel research international, Volume 96, Issue 2, February 2025.
A low‐carbon (0.23 wt%) carbide‐free bainitic steel is successfully developed with a total alloying addition of 4.9 wt%, which is relatively lower than alloying additions reported in similar category of steels. The present findings indicate that the currently designed low‐alloy steel composition is amenable to generation of nearly carbide‐free bainitic
Poulami Chakraborty, Suman Neogy, Nilabja Kanti Sarkar, Harish Donthula, Subir Kumar Ghosh, Hillol Kumar Nandi, Bandarupalli Gopalakrishna, Ilangovan Balasundar, Raghvendra Tewari   +8 more
wiley   +1 more source

Effect of Cooling Process After Rolling on Microstructure and Properties of V-N-Cr Microalloyed Q550E High Strength Steel

Teshugang, 2018
The controlled rolling and cooling test was conducted on V-N-Cr microalloyed low carbon steel. There are three cooling mode, including cooling with furnace, cooling with insulation quilt, and air cooling, and the microstructure, mechanical properties and
王宝华, 张明博, 程玉君, 胡军, 薛启河, 杜林秀   +5 more
doaj  

The Use of Compressed Air for Micro-Jet Cooling After MIG Welding

Archives of Metallurgy and Materials, 2016
The material selected for this investigation was low alloy steel weld metal deposit (WMD) after MIG welding with micro-jet cooling. The present investigation was aimed as the following tasks: obtained WMD with various amount of acicular ferrite and ...
Hadryś D., Węgrzyn T., Piwnik J., Stanik Z., Tarasiuk W.   +4 more
doaj   +1 more source

A Physically Based Mean Field Model for Strain‐Induced Precipitation and Recrystallization in High‐Strength Low‐Alloy Steels

steel research international, Volume 96, Issue 1, January 2025.
A physically based mean field model is employed to describe the microstructural evolution during the thermomechanical control process of X70 high‐strength low‐alloy steels, due to the interaction between strain‐induced precipitation of niobium and titanium carbonitrides and static recrystallization of austenite.
Maria‐Ioanna T. Tzini, Gregory N. Haidemenopoulos   +1 more
wiley   +1 more source

Crystal Structure of Acicular Barium Ferrite Fine Particles.

Journal of the Japan Society of Powder and Powder Metallurgy, 1997
Acicular barium ferrite fine particles doped with Co2+ ions and Ti4+ ions were prepared by a conventional sintering method. We investigated fine structure of the acicular BaCoxTixFe12-2xO19 (X=0 and 0.7) particles using x-ray diffractometer (XRD) and high resolution transmission electron microscope (HR-TEM). From x-ray diffraction patterns of them, the
Kakizaki, Koichi, Hiratsuka, Nobuyuki
openaire   +2 more sources