Thermo-mechanical processing of high strength steels -- Part 1 HY-130 steel
- Lehigh Univ., Bethlehem, PA (United States). ATLSS Research Center
- NSWC, Annapolis, MD (United States). Carderock Division
HY-130 steel is a 5Ni-Cr-Mo-V steel typically containing 0.10 to 0.12 percent carbon with a minimum yield strength of 130 ksi and other physical and chemical properties specified in MIL-S-24371B(SH). At the typical carbon content, HY-130 steel must be preheated to avoid heat-affected-zone (HAZ) cracking during welding, a costly and difficult-to-control field-fabrication practice. This program was undertaken to investigate the feasibility of eliminating the necessity of preheating by reducing the carbon content to 0.04 and 0.07 percent and offsetting the loss in hardenability and strength by a minor adjustment in alloy content and by controlled rolling and direct quenching (CRDQ) the plate. The results indicated that compared with conventional rolling, air-cooling and off-line heat-treatment (HRAQ), CRDQ processing increased the yield strength of 1-inch-thick plate by an average of 15 ksi and 2-inch-thick plate by an average of 9 ksi but with some loss in toughness.
- OSTI ID:
- 234241
- Report Number(s):
- CONF-951026--; ISBN 0-87170-555-9
- Country of Publication:
- United States
- Language:
- English
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