precipitation hardening


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precipitation hardening

[prə‚sip·ə′tā·shən ‚härd·ən·iŋ]
(metallurgy)
McGraw-Hill Dictionary of Scientific & Technical Terms, 6E, Copyright © 2003 by The McGraw-Hill Companies, Inc.
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The main role of vanadium is known as the fine austenites, the generation of microcrystals, ferrite grains refining and precipitation hardening. In addition, resistance to cracking increases, toughness is not reduced, and tensile strength and abrasion resistance are improved [2].
One of these properties is hardness, and hence the name, precipitation hardening. In the process which gives precipitation harden, usually at relatively low temperatures, much complex change may occur before the actual precipitation, and the details differ in the variety of alloys which have been so far investigate by many workers.
A case in point was his insistence on using type 17-4 precipitation hardening stainless steel for the major components of his firearm designs.
The focus returns to the original physical metallurgy, and the material has been rearranged so that separate chapter deal with solidification, point defect behavior, interfaces and grain boundaries, precipitation hardening, and other matters.
[DELTA][[sigma].sub.P]--contribution of precipitation hardening,
Their topics include thermodynamic calculations for quantifying the phase fraction and element partition in maraging systems and precipitation hardening steels, quantifying phase transformation kinetics and age hardening, over-ageing, precipitation hardening stainless steels, and applying artificial neural networks in the modeling of steel properties.
Tear strength will increase due to the increased path length for the crack to follow--akin to precipitation hardening in metals.

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