Approved for public release; distribution is unlimited / 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. / http://archive.org/details/effectofagingtre00hein / Lieutenant, United States Navy
| Identifer | oai:union.ndltd.org:nps.edu/oai:calhoun.nps.edu:10945/23189 |
| Date | 12 1900 |
| Creators | Heinze, Marvin H. |
| Contributors | Saboury, Saeed, Losz, J. Mauro B, Naval Postgraduate School (U.S.), Mechanical Engineering |
| Publisher | Monterey, California. Naval Postgraduate School |
| Source Sets | Naval Postgraduate School |
| Language | en_US |
| Detected Language | English |
| Type | Thesis |
| Format | 58 p., application/pdf |
| Rights | This publication is a work of the U.S. Government as defined in Title 17, United States Code, Section 101. Copyright protection is not available for this work in the United States. |
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