The Influence of Different Microstructures to Fracture Toughness and Hardness of Quenched LNE 380 Steel at Different Temperatures

Alexandre Nogueira Ottoboni Dias; Márcia Regina Baldissera; Gilberto Carvalho Coelho; Alfredo Yassuo Oshiro; Eduardo Carvalho Rossi; Andersan dos Santos Paula; Geovani Rodrigues

doi:10.4028/www.scientific.net/MSF.805.231

Paper Titles

Influence of Aging Time on the Tensile Strenght of a Duplex Stainless Steel
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Effects of Multiple Pre-Sintering Heat Treatments and Consolidations Applied to Nicralc Alloys Processed by Mechanical Alloying
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Microstructural Characterization and Evaluation of Mechanical Properties of Steel with Different Biphasic Microstructures Obtained from LNE 500 Steel
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The Influence of Different Microstructures to Fracture Toughness and Hardness of Quenched LNE 380 Steel at Different Temperatures
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Metallographic Analysis of a TRIP 800 Steel Using Digital Image Processing
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Utilization of Color Metallography in Characterization of a Modified SAE 4118H Steel Submitted to Isothermal Treatments
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Strategies for Controlling a Heat Treatment Furnace
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The Influence of Different Microstructures to Fracture Toughness and Hardness of Quenched LNE 380 Steel at Different Temperatures

Abstract:

In this work it was analyzed the evolution of mechanical properties of Dual-Phase steel as a function of volume fractions of ferrite and martensite, obtained from steel type LNE 380. The intercritical region and the existing phases in function of temperature were determined using the THERMOCALC software. The samples of steel were quenched at different temperatures to obtain differents microstructures consisting of ferrite, pearlite and martensite. The microstructural characterization of the samples was performed by qualitative and quantitative metallography. The mechanical properties were determined by hardness and impact tests. It was concluded that the volume fraction of ferrite and martensite calculated experimentally agrees with the simulation and the variation of these fractions affects significantly the hardness of the steel, but does not significantly affect the results of fracture toughness.

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Periodical:

Materials Science Forum (Volume 805)

Pages:

231-235

DOI:

https://doi.org/10.4028/www.scientific.net/MSF.805.231

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Online since:

September 2014

Authors:

Alexandre Nogueira Ottoboni Dias*, Márcia Regina Baldissera, Gilberto Carvalho Coelho, Alfredo Yassuo Oshiro, Eduardo Carvalho Rossi, Andersan dos Santos Paula, Geovani Rodrigues

Keywords:

Dual Phase Steel, Mechanical Property, Microstructure

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