Results 51 to 60 of about 1,191 (195)
Linking Heat Treatment to Plastic Deformation in Pearlitic Steels Through Mesoscale Modeling
Surface wear on rail and wheel steels results from surface deformation during use. This research uses mathematical models to forecast the plastic behavior of pearlitic steels, connected to the microstructure formed during heat treatment. While the cooling rate impacts the steels’ strength, the size of prior austenite grains and blocks does not ...
Saham Sadat Sharifi +5 more
wiley +1 more source
Microhardness reached a maximum of 158.5 ± 3.9 HV at 4 wt.% Fe, with tensile strength peaking at 331.9 ± 9.9 MPa, whereas higher Fe addition (6 wt.%) caused microhardness and tensile strength to decline to 142.4 ± 4.8 HV and 294.7 ± 9.2 MPa, respectively, due to particle clustering and thermal softening.
Zahra Sakhaei +2 more
wiley +1 more source
Assessing the Very High Cycle Fatigue Behavior and Frequency Effect of Structural Steel Welds
ABSTRACT The very high cycle fatigue behavior of S275J2+N flux‐core arc welded joints was investigated using the ultrasonic fatigue testing method at a loading frequency of 20 kHz. A bespoke specimen design featuring the weld toe was employed to more suitably represent in‐service welded joints than typical ultrasonic fatigue testing specimens.
Andrew England +2 more
wiley +1 more source
Comparative Fatigue Analysis of Structural Steels Considering Welding and Surface Effects
ABSTRACT There are limited data on the very high‐cycle fatigue for structural steel welds for over 10 million cycles. The purpose of this research is a fatigue performance comparison of the welds made of steels S355JR+AR and S275JR+AR. The goal of reaching the gigacycle fatigue domain is achieved using the ultrasonic fatigue testing at 20 kHz.
Yevgen Gorash +6 more
wiley +1 more source
Stress corrosion cracking and fracture toughness variation of high strength steels. [PDF]
The stress corrosion cracking process is at this moment an unknown mechanism of deterioration. It is a process that implies the joint action of the media, the presence of corrosion or a surface defect and of stress in the metal.
Andrade Perdrix, María del Carmen +2 more
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A robust computational framework is proposed, which is designed to simulate microstructural‐scale plastic deformation and damage in pearlitic steels. The framework is calibrated and validated using experimental data from pearlitic steel rail samples. Subsequently, it is employed to investigate the impact of microstructural parameters, such as cementite
Ravi Kiran Bollineni +3 more
wiley +1 more source
Strength Anisotropy and Residual Stress in Drawn Pearlite Steel Wire
Strength anisotropy is found by tensile and compressive tests for a drawn pearlite steel wire, where the compressive tests are performed for prepared specimens along directions of 0, 45 and 90 degrees with respect to the drawing direction. The influence of annealing on such anisotropic strength is also examined. To make clear the origin of the strength
T. Suzuki +5 more
openaire +2 more sources
Taking advantage of co‐deformation mechanisms is a promising way to achieve fine grain metal matrix composites or architectured structures with unique properties. Understanding physical mechanisms is critical to promote refinement or fragmentation or mechanical mixing.
Xavier Sauvage
wiley +1 more source
Multi‐principal‐element alloys (MPEAs) with high work hardening capacity, like Hadfield steel, can extend conventional alloy systems. In this study, CoFeNi‐based MPEAs with Mn and C are cast and mechanically finished using ultrasonic milling. The resulting MPEAs show significant hardness increase and improved wear resistance, demonstrating their ...
Bianca Preuß +7 more
wiley +1 more source
Influence of Tramp Elements on Surface Properties of Liquid Medium‐Carbon Steels
Greenhouse gas restrictions are forcing steel producers to increase recycling rates. The resulting higher tramp element content affects the oxidic cleanness. Herein, the influence of tramp elements on surface tension, contact angle, and formation of nonmetallic inclusions is investigated.
Julian Cejka +4 more
wiley +1 more source

