from The American Heritage® Dictionary of the English Language, 4th Edition
- adj. Of or relating to a eutectic mixture or alloy.
- n. A eutectic mixture or alloy.
from Wiktionary, Creative Commons Attribution/Share-Alike License
- adj. Describing the phase-change reaction of an alloy in which, on cooling, a single solid phase transforms into two other solid phases.
- n. An alloy of a composition that undergoes the eutectoid transformation.
from The Century Dictionary and Cyclopedia
- Exhibiting eutectic character.
- n. A substance which behaves as a eutectic.
Sorry, no etymologies found.
It represents the complete transformation of the eutectoid austenite accomplished by slow-cooling of an iron-carbon alloy through the transformation range.
There are several theories to explain this reaction, but generally it is only necessary to remember that in hardening we quench steel from the austenite phase, and, due to this rapid cooling, the normal change from austenite to the eutectoid composition does not have time to take place, and as a consequence the steel exists in a partially transformed, unstable and very hard condition at atmospheric temperatures.
· Coupled eutectic iron eutectic (SGI) · Gray / white iron eutectic eutectoid iron gray iron eutectoid Peritectic change Scheil model iron / carbon changes in solid-state
Slide 2: Objectives of Chapter 12 Discuss how to use the eutectoid reaction to control the structure and properties of steels through heat treatment and alloying.
Figure 12.19 The effect of 6\% manganese on the stability ranges of the phases in the eutectoid portion of the Fe-Fe3C phase diagram.
From a piece of eutectoid steel electrically welded.] [Illustration: FIG.