High chromium content welding material to improve resistance of corrosion method and device
 A low pressure steam turbine and generator low alloy steel disc rotors with extended useful life properties. A ring member of the disc rotor has disposed on it multiple weld layers of ferrous material, forming a weld region. The ring member is made of a low alloy ferrous metal alloy having less than about six weight percent alloying ingredients including chromium. The chromium content of the weld region increases overall from a portion of the weld region adjacent to the ring member to a portion of the weld region farthest from the ring member. This general increase is accomplished using weld metal of a single chromium concentration of between 9% and 17% chromium and varying the welding parameters. 
Westinghouse Electric Corporation
Y F B B B B Y F
Y10T F01D B23K B23K B23K B23K Y10T F01D
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Dennis Ray Jianqiang Sallie Ann
Amos Chen Bachman