Articles By D. Scott MacKenzie, Ph.D., FASM


Hot Seat: Hardenability

Factors that affect hardenability and the rate of austenite transformation — carbon content, grain size, and alloying elements — can be used to calculate hardenability for comparing alloy grades.

Hot Seat: Applications of Hardenability

A method is described to either calculate the hardness in a component given the quenchant used or to select a quenchant to achieve a desired hardness at the core or surface of a part.

Hot Seat: Development of Residual Stresses During Machining and Workholding

Machining and fixturing prior to heat treatment are among the many potential sources for distortion and residual stress.