Tempering Embrittlement
Mostrando 1-5 de 5 artigos, teses e dissertações.
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1. Characterization of Impact Toughness Properties of DIN39MnCrB6-2 Steel Grade
Boron added steels in quenched and tempered condition have been widely used in applications where good mechanical properties and low cost are required. In this study, impact resistance of DIN 39MnCrB6-2 steel grade was investigated due to its criticality in automotive components. Metastable phase diagrams were built to guide heat treatments. The influence he
Mat. Res.. Publicado em: 04/12/2017
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2. Caracterização da nova liga Fe-C-Mn-Si-Cr: fragilização da martensita revenida e curvas de revenimento. / A new Fe-C-Mn-Si-Cr alloy characterization: tempered martensite embrittlement and tempering curves.
O aço SAE/AISI 52100 é utilizado para a fabricação de rolamentos como também na fabricação de outras peças e dispositivos como cames de eixo comando de válvulas. Um dos problemas desta liga é a necessidade de revenimentos em temperaturas muito baixas para obtenção de alta dureza e para evitar o fenômeno da fragilização da martensita revenida (
IBICT - Instituto Brasileiro de Informação em Ciência e Tecnologia. Publicado em: 07/03/2012
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3. Influence of phosphorus content and quenching/tempering temperatures on fracture toughness and fatigue life of SAE 5160 steel
This study investigates the influence of quenching/tempering temperatures on the fracture toughness and fatigue life of SAE 5160 steel, considering different phosphorus contents. Quenching and tempering treatments were applied to samples removed from different bars of commercial SAE 5160 steel with different P content. Three different austenitizing temperatu
Materials Research. Publicado em: 2010-12
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4. The Influence of the Austenitizing Temperatures for Quenching and Tempering on the Toughness and Fatigue Life of SAE 5160 Steel with Different P Contents / Influência da temperatura de austenitização para têmpera e de revenimento na tenacidade e na vida em fadiga do aço SAE 5160 para diferentes teores de fósforo
The aim of this work was to analyze the influence of austenitizing and tempering temperatures on the impact and fatigue life of the SAE 5160 spring steel, considering two different P amount. Bars (70 x 10 mm) were heat treated using three different austenitizing temperatures, 850ºC, 900ºC and 1000ºC, with a 15 min furnace soaking time. The quenching tempe
Publicado em: 2007
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5. CARACTERIZAÇÃO DAS PROPRIEDADES MECÂNICAS DO AÇO SAE 4140 APÓS DIFERENTES TRATAMENTOS DE TÊMPERA E REVENIDO / CARACTHERIZATION OF MECHANICAL PROPERTIES ON SAE 4140 STEEL AFTER DIFFERENT TREATMENTS OF QUENCHING AND TEMPERING
The high strength and low alloy steels (HSLA) belong to a class of steels in which researchers of the metal-mechanic area have particular interest. The aim of this work is to verify the influence of quenching and tempering heat treatments on the properties of the SAE 4140 steel as well as to evaluate its behaviour when subjected to tempering in a temperature
Publicado em: 2006