| abstract |
The dual hardness steel article comprises a first air curable alloy steel having a first hardness that is metallurgically joined to a second air curable alloy steel having a second hardness. A method of manufacturing a dual hardness steel article includes providing a first air-hardenable alloy steel part having a first mating surface and having a first part hardness; and a second mating surface; And providing a second air-hardenable alloy steel part having a second part hardness. The first air curable alloy steel part is metallurgically secured to the second air curable alloy steel part to form a metallurgically secured assembly, the metallurgically secured assembly. Is hot rolled to provide a metallurgical bond between the first mating surface and the second mating surface. [Selection] Figure 1B |