| Title |
Effect of pressure during solidification on the structure & tensile strength in Zn - Al alloy |
| Authors |
이종남(J . N . Lee); 한봉희(B . H . Hahn); 염희택(H . T . Yeom) |
| Abstract |
In order to study the effect of pressure during the solidification on the structure and tensile strength, Zn-22% Al alloy was subjected to pressure as high as 250∼1000 ㎏/㎠ during solidification, and poured into cylindrical steel mould from crucible electric furnace. The application of pressure during solidification has been shown to induce a number of important modification to the gravity cast structure. Chief among these were as follows. 1. Suppression of piping 2. Elimination of pores. 3. Columnar crystal change to equiaxed crystal by increasing the applied pressure. 4. Refining of grain size and markedly improving of tensile strength |