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Study of fatigue in AISI 4340 steel with different microstructural conditions, submitted to a surface treatment of shot peening
(2016-01-01)
The AISI 4340 steel has been largely employed for structural purposes, which requires resistance levels with yield strength above 1400 MPa and it attains high levels of resistance in dual phase, bainitic or martensitic ...
MICROSTRUCTURAL CHARACTERIZATION OF CP STEEL USED IN AUTOMOTIVE INDUSTRY
(Trans Tech Publications Ltd, 2014-01-01)
This study aims to characterize the microstructure of the complex phase steel (CP). Using the conventional and colored metallographic analysis with 3% Nital etchant, sodium metabisulfite 10% and LePera. Techniques were ...
CHARACTERIZATION OF A AISI/SAE 4340 STEEL IN DIFFERENT MICROSTRUCTURAL CONDITIONS
(Trans Tech Publications Ltd, 2014-01-01)
The 4340 are classified as ultra-high strength steels used by the aviation industry and aerospace applications such as aircraft landing gear and several structural applications, usually in quenched and tempered condition. ...
Effects of Macrosegregation and Microstructure on the Corrosion Resistance and Hardness of a Directionally Solidified Zn-5.0wt.%Mg Alloy
(ABM, ABC, ABPol, 2019)
This study aims to analyze the influence of macrosegregation on microstructure evolution, and of microstructure length scale on the corrosion resistance of a Zn-5.0wt.%Mg alloy casting. The analyzed samples were taken along ...
Wire and arc additive manufacturing of HSLA steel: Effect of thermal cycles on microstructure and mechanical properties
(2019-05-01)
Wire and arc additive manufacturing (WAAM) is a viable technique for the manufacture of large and complex dedicated parts used in structural applications. High-strength low-alloy (HSLA) steels are well-known for their ...
The influence of heat treatment on the structure and microstructure of ti-15Mo-xNb system alloys for biomedical applications
(2014-01-01)
The Ti-15Mo-xNb system integrates a new class of titanium alloys without the presence of aluminum and vanadium, which exhibit cytotoxicity, and that have low elasticity modulus values (below 100 GPa). This occurs because ...
The influence of heat treatment on the structure and microstructure of Ti-15Mo-xNb system alloys for biomedical applications
(2014)
The Ti-15Mo-xNb system integrates a new class of titanium alloys without the presence of aluminum and vanadium, which exhibit cytotoxicity, and that have low elasticity modulus values (below 100 GPa). This occurs because ...
The Influence of Small Quantities of Oxygen in the Structure, Microstructure, Hardness, Elasticity Modulus and Cytocompatibility of Ti-Zr Alloys for Dental Applications
(Mdpi Ag, 2014-01-01)
The mechanical properties of Ti alloys are changed significantly with the addition of interstitial elements, such as oxygen. Because oxygen is a strong stabilizer of the a phase and has an effect on hardening in a solid ...
Microstructural and electrochemical study of La0.5Li0.5TiO3
(Elsevier B.V. Sa, 2011-05-16)
The La0.50Li0.50TiO3 powder was synthesized by the polymeric precursor method. The thermal evolution of the precursor powder heated from 350 degrees C to 700 degrees C was followed by means of Raman spectroscopy. The ...
Influence of aging on microstructure and hardness of lead-free solder alloys
(Emerald, 2021-01-08)
Purpose: The purpose of this paper is to carry out a study of the evolution of the microstructure and the microhardness of Sn-Cu-Ag alloys from as-cast condition and under artificial isothermal aging at different temperatures ...