VARIATION IN THE PROPERTIES OF A NICKEL-BASE FOUNDRY ALLOY SUBJECTED TO ELECTROSLAG REMELTING (IZMENENTIE SVOISTV LITEINOGO SPLAVA NA NIKELEVOI OSNOVE PRI ELEKTROSHLAKOVOM PEREPLAVE),
Abstract
In the electroslag remelting method, metal smelted in a regular furnace is cast as a bar, then is remelted in a special installation in such a way that a portion of the liquid remelt, passing through a layer of a special flux at high temp., comes to a crystg. app. and solidifies with practically no contact with air. CaF2 was used as the flux in the remelting. At room temp., the plastic properties (elongation and shock resistance) improved 3-3.5 times and the redn. of area increased by 25-30%, with some improvement of short-term strength characteristics; at 800 degrees the gain in plasticity in electroslag remelting remains the same as at 20 degrees, with practically equal strength. The electroslag remelting substantially improves the continuous strength of a cast alloy in the range of high stresses and short service time, and is impracticable when the metal is used for work at relatively light stresses, but for long duration (>1500 hrs.). Electroslag remelting, bettering the state of grain boundaries of an alloy and considerably improving its plasticity, makes possible the forging of an expti. alloy, while in the case of the usual smelting the alloy breaks with the first strokes of the hammer. (Author)
Document Details
- Document Type
- Technical Report
- Publication Date
- Oct 20, 1967
- Accession Number
- AD0670904
Entities
People
- R. P. Zaletaeva
Organizations
- National Air and Space Intelligence Center