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Production and heat treatment of cast graphitic steels with additions of niobium
(2006-12-01)
The optimal combination of the mechanical characteristics of austempered spheroidal graphitic cast steel together with modern casting techniques yielded an economically promising product. The maximum potential of the usage ...
Efeitos das microestruturas bainíticas e multifásicas nas propriedades mecânicas de um aço AISI 4340
(Universidade Estadual Paulista (UNESP), 2014)
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 ...
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. ...
Microstructural characterization of joints of maraging 300 steel welded by laser and subjected to plasma nitriding treatment
(2016-01-01)
Amongst the ultra high strength steels, the maraging steels have been noticed because they maintain the fracture toughness superior to other steels of their class. The main difference is the way they acquire resistance. ...
Influence of hydrogen on the microstructure and fracture toughness of friction stir welded plates of API 5L X80 pipeline steel
(2019-08-30)
In this work, the influence of hydrogen on the microstructure and fracture toughness of API 5L X80 high strength pipeline steel welded by friction stir welding was assessed. Samples were hydrogenated at room temperature ...
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 ...
Desenvolvimento do aço alto C-Si e Cr com matriz nanoestruturada de martensita e bainita
(Universidade Federal de Minas GeraisUFMG, 2011-02-04)
In this work was carried out the study and development of a commercial steel with high content of C, Si, Cr and with a nanostructured matrix of martensite and bainite. The steel used in this work was the SAE 9254 which is ...