Metallurgical Principles and Practice of Engineering (PE) Study Guide: Question #39

It Is the Policy of The Minerals, Metals & Materials Society (TMS) to Encourage the Professional Registration of Metallurgical Engineers.
One manufacturer, concerned about quench-related distortion, decided to change to an alloy with a higher chromium content. Why would that help?

(A)	The chromium would increase hardenability, allowing him to slow down the quench rate.
(B)	Chromium in solution stiffens the iron matrix and minimizes distortion.
(C)	Chromium competes with carbon for interstitial sites in the iron, causing a more uniform carbon case, and therefore less distortion.
(D)	The increased chromium would offer no improvement in distortion.

The information on this page is maintained by the Nellie Luther (natale@tms.org).

Search PE Study Guide TMS Education Page About TMS TMS OnLine