Results 51 to 60 of about 33,754 (277)

Studies and Researches on Heating Microstructures of Some Steels

open access: yesScientific Bulletin of Valahia University: Materials and Mechanics, 2022
An important category of widely used steels is chromium alloy improvement steels (STAS 9382/4-89) intended for the execution of shafts, axles, cams, sprockets and sprockets subjected to operation at important demands.
Stoian Elena Valentina   +5 more
doaj   +1 more source

Effect of Fatigue Crack Growth Rate on Varied Percentage of Martensite for Welded DP Steel [PDF]

open access: yes, 2013
The objective of this investigation is to study the fatigue behaviour of Dual phase(DP)steel with varying percentage of martensite. The study is conducted on samples of welded Dual phase steel prepared by intercritical ...
Kempaiah, U.N., Nagaraj Kori, .
core  

Distinct Microstructural Characteristic Lengths Defining Notch Fatigue Crack Initiation and Propagation, and Defect Tolerance in Advanced Steels

open access: yesAdvanced Engineering Materials, EarlyView.
Schematic representation of modes of microcrack nucleation, growth and temporary arrestment at different boundaries, with the criteria for crack propagation in three scenarios: (1) large notch, (2) defect/small sharp notch, and (3) long crack. This work revisits and integrates results on the fatigue behavior of advanced bainitic steels (in particular ...
Lucia Morales‐Rivas
wiley   +1 more source

Mechanical and tribological behavior of dual-phase ductile iron with different martensite amounts

open access: yesJournal of Materials Research and Technology, 2023
Ferrite-martensite (F/M) dual-phase ductile iron with different relative amounts of martensite was fabricated via intercritical quenching in the present study. The mechanical properties and tribological behavior were investigated. The strength of ductile
Chen Liu   +7 more
doaj   +1 more source

MARTENSITE TRANSFORMATIONS IN Fe-Pd ALLOYS

open access: yes, 1982
Martensite transformations in Fe-Pd alloys have been extensively studied by means of X-ray diffractometry, optical and electron microscopy and Mössbauer effect. Successive martensite transformations were found in the Fe-Pd alloys with about 30at% Pd. The
R. Oshima, M. Sugiyama
core   +1 more source

Investigating the Effect of Inclination Angle and the Influence of Scan Parameters on the Appearance and Thermal and Mechanical Properties of Filigree Tension Rods of LPBF‐Manufactured NiTi Shape‐Memory Alloys

open access: yesAdvanced Engineering Materials, EarlyView.
This article investigates the dependence of the properties on the manufacturing orientation in the form of the inclination angle to the build plate of LPBF‐fabricated NiTi rods with a diameter of 150–220 µm. Metallographic, chemical, thermal, and mechanical characterization show behavior under identical manufacturing conditions that ranges from ...
Sandra Herzig   +2 more
wiley   +1 more source

High‐Entropy Alloy Interlayers Toward Advanced Joining for High‐Performance Structural Applications: Current Progress and Emerging Challenges

open access: yesAdvanced Engineering Materials, EarlyView.
HEA interlayers offer a versatile route for joining high‐performance structural materials. Their compositional and structural design regulates interfacial reactions, suppresses brittle IMCs, and improves metallurgical bonding. Sandwich interlayers further integrate defect healing with precipitation strengthening, enabling improved strength–ductility ...
Lin Yuan   +4 more
wiley   +1 more source

Hydrogen Effect on the Cyclic Behavior of a Superelastic NiTi Archwire

open access: yesMetals, 2019
In this work, we are interested in examining the strain rate effect on the mechanical behavior of Ni–Ti superelastic wires after hydrogen charging and ageing for 24 h.
Rihem Sarraj   +4 more
doaj   +1 more source

Friction-Induced Martensitic Transformation and Wear Properties of Stainless Steel under Dry and Wet Conditions

open access: yesMetals, 2020
The wear characteristics of SUS304 and SUS316 stainless steels were evaluated at the rotation speeds of 100 m/s, 200 m/s, and 300 m/s under dry and wet conditions.
Yoon-Seok Lee   +2 more
doaj   +1 more source

Structure and Phase Transition of Fe-Mn Alloy Powders Prepared by Gas Atomization [PDF]

open access: yesMaterials Research, 2015
In this paper we investigated the microstructure and phase transition of atomized Fe-(1.3, 7.9, 11.7 wt.%) Mn alloy powders. The results show that the main phases of Fe-1.3Mn, Fe-7.9Mn and Fe-11.7Mn powders are ferrite, α’-martensite+austenite, α ...
Yang Yang   +4 more
doaj   +2 more sources

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