THE EXTRUSION, FORGING, ROLLING, AND EVALUATION OF REFRACTORY ALLOYS
Abstract
Wrought bars of tungsten-base alloys were produced by extrusion of arc-cast billets under a variety of conditions. Billets of W+O.6Cb alloy were successfully extruded using temperatures between 3200 and 4200 F and reduction ratios between 3.9:1 and 8.3:1. A comparison was drawn between W+O.6Cb extrusions produced from material melted by four suppliers. Differences in material characteristics could be traced to electrode suppliers. The W-6Mo+2Cb alloy was extruded between 3400 and 4200 F using ratios from 4.1:1 to 7.4:1. Surfaces were generally fair to poor and internal cracks were discovered in many extrusions. Machining billets from 4-inch ingots instead of 3 1/2-in. ingots produced only a slight improvement in extrusion quality.
Document Details
- Document Type
- Technical Report
- Publication Date
- Dec 01, 1963
- Accession Number
- AD0429115
Entities
People
- D. R. Carnahan
- G. A. Reimann
- J. A. Visconti
Organizations
- Westinghouse Electric Corporation