Drive train gear of lower bainite alloy steel

Details Drive train gear of lower bainite alloy steel Drive train gear of lower bainite alloy steel

1982-07-06

1984-02-21

Skiff, Peter K.

Metal treatment

Compositions

Heat treating

148143, C21D 932

Patent

active

044328125

ABSTRACT:
A drive train gear having a plurality of teeth thereon is formed of an alloy steel having a predominantly homogeneous and substantially complete low temperature bainite microstructure, including less than 10 Vol % austenite. The gear preferably consists essentially of preselected weight percentages of carbon, manganese, silicon, molybdenum, boron and the balance substantially iron. Such a gear has a high tensile strength, a reduced distortion during heat treatment, and a through hardness level of at least Rc56 therethrough.

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Reed-Hill, Physical Metallurgy Principles, VanNostrand Reinhold Company, New York, N.Y. 1964, pp. 458-467.

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