The Effect of Aging Treatment on the Microstructure and Properties of Copper-Precipitation Strengthened HSLA (High Strength Low Alloy) Steel
The Effect of Aging Treatment on the Microstructure and Properties of Copper-Precipitation Strengthened HSLA (High Strength Low Alloy) Steel

Author:

Publisher:

Published: 1988

Total Pages: 0

ISBN-13:

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The high strength low alloy (HSLA) steels which are being developed as replacements for the HY family of steels are low carbon steels which derive their strength in part due to the precipitation of fine coherent copper particles formed during a quench and aging heat treatment. HSLA-100 is being developed to meet the strength and toughness requirements of HY-100 but can easily welded without preheat, thereby reducing fabrication costs. This investigation uses light and electron microscopy for microstructural characterization while tensile, Charpy, and hardness tests are relied upon for the mechanical properties. The microstructure and mechanical characteristics of HSLA-100 after aging at several different temperatures was correlated. A high ductility and the minimum 100 ksi yield strength was found after aging at 675 C, although this temperature was found to be close to the low eutectoid temperature displayed by HSLA-100. Splitting was observed in the tensile fracture surfaces but the mechanical properties were not adversely affected. (jes).

The Effect of Aging Treatment on the Microstructure and Properties of Copper-Precipitation Strengthened HSLA (High Strength Low Alloy) Steel
The Effect of Aging Treatment on the Microstructure and Properties of Copper-Precipitation Strengthened HSLA (High Strength Low Alloy) Steel

Author: Martin H. Heinze

Publisher:

Published: 1988

Total Pages: 65

ISBN-13:

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The high strength low alloy (HSLA) steels which are being developed as replacements for the HY family of steels are low carbon steels which derive their strength in part due to the precipitation of fine coherent copper particles formed during a quench and aging heat treatment. HSLA-100 is being developed to meet the strength and toughness requirements of HY-100 but can easily welded without preheat, thereby reducing fabrication costs. This investigation uses light and electron microscopy for microstructural characterization while tensile, Charpy, and hardness tests are relied upon for the mechanical properties. The microstructure and mechanical characteristics of HSLA-100 after aging at several different temperatures was correlated. A high ductility and the minimum 100 ksi yield strength was found after aging at 675 C, although this temperature was found to be close to the low eutectoid temperature displayed by HSLA-100. Splitting was observed in the tensile fracture surfaces but the mechanical properties were not adversely affected. (jes).

EPD Congress 2016
EPD Congress 2016

Author: Antoine Allanore

Publisher: Springer

Published: 2016-12-15

Total Pages: 183

ISBN-13: 3319481118

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EPD Congress is an annual collection that addresses extraction and processing metallurgy. The papers in this book are drawn from symposia held at the 2016 Annual Meeting of The Minerals, Metals & Materials Society. The 2016 edition includes papers from the following symposia: •Materials Processing Fundamentals •Advanced Characterization Techniques for Quantifying and Modeling Deformation

Bainite and Martensite
Bainite and Martensite

Author: Carlos Garcia-Mateo

Publisher: MDPI

Published: 2020-05-27

Total Pages: 166

ISBN-13: 3039288571

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The microstructures of both martensite and bainite, although sharing some common features, depict a plethora of subtle differences that made them unique when studied in further detail. Tailoring the final properties of a microstructure based on one or the other as well as in combination with others and exploring more sophisticated concepts, such as Q&P and nanostructured bainite, are the topics which are the focus of research around the world. In understanding the key microstructural parameters controlling the final properties as well as definition of adequate process parameters to attain the desired microstructures requires that a proper understanding of the mechanism ruling their transformation and a detailed characterization first be acheived. The development of new and powerful scientific techniques and equipment (EBSD, APT, HRTEM, etc.) allow us to gain fundamental insights that help to establish some of the principles by which those microstructures are known. The developments accompanying such findings lead to further developments and intensive research providing the required metallurgical support.