| Title |
The Effects of Substituting W for Mo on Mechanical Properties in AISI 4340 Alloy Steel |
| Authors |
박창남(C . N . Park); 강석봉(S .B . Kang); 김영길(Y . G . Kim) |
| Abstract |
The effects of substituting W for Mo on Mechanical Properties in a quenched and tempered martensitic AISI 4340 steel were investigated. The alloys containing 0.3-0.6 w/o W exhibited 35-75% increase at room temperature in impact toughness over the alloy containing 0.25% Mo after tempered at 600℃. However, the yield strength and the ultimate tensile strength were not increased significantly by substituting W for Mo. The mechanical properties were not improved greatly the W content exceeded about 0.4 w/o. Therefore it is recommended that 0.3-0.4 w/o W is suitable for optimizing the strength and the toughness when substituting W for Mo in AISI 4340 steel. |