The effect of aging treatment on the microstructure and properties of copper-precipitation strengthened HSLA steel
Heinze, Marvin H.
Losz, J. Mauro B
MetadataShow full item record
The high strength low alloy (HSLA) steels which are being developed as replacements for the HY family of steels ire 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 oughness requirements of HY-100 but can be easily welded without preheat, thereby reducing fabrication costs. This investigation uses light and electron microscopy for microstructural characterization while tensile, Charpy, ind hardness tests are relied upon for the mechanical properties. The microstructure and mechanical characteristics }f HSLA- 100 after aging at several different temperatures was correlated. A high ductility and the minimum 100 csi yield strength was found after aging at 675 C, although this temperature was found to be close to the low jutectoid temperature displayed by HSLA- 100. Splitting was observed in the tensile fracture surfaces but the nechanical properties were not adversely affected.
Approved for public release; distribution is unlimited
Showing items related by title, author, creator and subject.
Microstructure evolution and microstructure - property relationships in friction stir processing of NiAl bronze McNelley, T.R.; Oh-Ishi, K.; Zhilyaev, A.P. (Trans Tech Publications, 2007);Abstract. Friction stir processing (FSP) has been employed for localized modification and control of microstructures in NiAl bronze materials, which are widely utilized for marine components. The thermomechanical cycle ...
The effects of isothermal deformation and annealing on the microstructure of nickel-aluminum-bronze in relation to the friction stir process Vazquez, Brian K. (Monterey, California. Naval Postgraduate School, 2003-12);The FSP of Nickel Aluminum Bronze is a novel approach to enhance the microstructural properties of the material through a shear deformation process. This thesis examines the effect on microstructure of isothermal annealing ...
Suka, Akira (Monterey, California. Naval Postgraduate School, 1992-06);The microstructure and mechanical properties of highly welda ble high copper HSLA-100 steel in two-inch (50 mm) plate form were investigated in this work. The mechanical property data showed that the steel in the as-quenched ...