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Vol.42, No.7, 537 ~ 543, 2004
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| Title |
| Effect of Alloying Elements on Elevated Temperature Tensile Ductility of Bi-Added, Pb-Free Brass |
| 장영환 Y. H. Jang , 김상식 S. S. Kim , 김인상 I. S. Kim , 한승전 S. Z. Han |
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| Abstract |
| In the present study, the effects of P and/or Misch metal (Ms) on the microstructure and high temperature tensile behavior of Bi-added, Pb-free brass were examined. It was found that the tensile ductility of Bi-added. Pb-free brass decreased significantly at 300℃. The addition of P and/or Ms, on the other hand, greatly improved elevated temperature tensile ductility of the present alloy. The microstructural observation demonstrated that the formation of Bi film along the α-β, phase boundary. which is the main cause for the low tensile ductility at elevated temperature, was substantially reduced with the addition of P and/or Ms. The retarded Bi film formation was believed to be due to the thermally stable Bi-related compounds formed in Bi-added, Pb-free brass. (Received April 8, 2004) |
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| Key Words |
| Bi-added, Pb-free brass, P, Ms, Elevated temperature tensile ductility |
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