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首页> 美国政府科技报告 >Base-Metal Evaluation of a Production Electricfurnace Heat of 5ni-Cr-Mo-V Steel
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Base-Metal Evaluation of a Production Electricfurnace Heat of 5ni-Cr-Mo-V Steel

机译：5ni-Cr-mo-V钢生产电炉热量的基础金属评价

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An 80-ton electric-furnace heat of the 5Ni-CrMo-V steel was melted, rolled to 1/2-, 1-, 2-, and 4-inch-thick plates, and the plates were quenched and tempered. An initial evaluation of the production and properties of the plates indicated that the 5Ni-Cr-Mo-V steel was satisfactory in all respects. Therefore, the production plates were more completely evaluated to determine the effect of various austenitizing and tempering treatments on their mechanical properties and to determine the uniformity of their mechanical properties. The heat-treating studies showed that the tempering characteristics of the production plates were similar to those of the Laboratory 5Ni-Cr-Mo-V steel, that blower-cooling 1/2-inch-thick plates to simulate the cooling at the midthickness of a 4-inch-thick water-quenched plate was a conservative simulation as previously reported, that the 5Ni-Cr-Mo-V steel has adequate hardenability for 4-inch-thick plates, and that the tensile and impact properties of heavy-gage 5Ni-Cr-Mo-V steel plates are slightly improved by a double- versus a single-austenitizing treatment. The studies of the uniformity of the production plates showed that the longitudinal and transverse tensile and impact properties of the 1/2- through 4-inch-thick production plates of the 5Ni-Cr-Mo-V steel were generally uniform. (Author)

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