Lean Hybrid Low-Alloy PM Molybdenum Steels

摘要

The volatility in the price of alloy additions has led to a fresh approach to alloying in ferrous PM materials. Hybrid low-alloy materials based on prealloyed powders in which molybdenum is the principal alloy addition provide flexibility in alloy design. The molybdenum content of the base powder can be adjusted to suit the hardenability requirements of the intended application. A review will be presented of the performance characteristics of hybrid low-alloy molybdenum steels in the as-sintered and the heat-treated condition. Two examples will be presented to show the flexibility of these hybrid low-alloy materials.