They have rounder corners than the other curves, which indicate the appearance of transient hardening
behaviour in the early stage.
Based on the previously mentioned analysis, three kinds of simple harmonic vibrations with different frequency and amplitude are imposed on the concrete specimens at pouring to the initial hardening
phase, initial hardening
to final hardening
phase, and pouring to the final hardening
3, the increase of laser power does not markedly magnify the optimal hardening
area on the AC16 workpiece.
To define the "layer hardness" process function, we have determined the specific form of the two process functions given by relations (1) and (2) for the concrete case of electron beam hardening
The analytical results, including the effects that material strain hardening
, strain rate dependency, and indenter geometry have on the indentation depth, are discussed in Sec.
Since the terrorist attacks, the property/casualty market's rate hardening
has accelerated because the insurance capacity in the marketplace has become strained, said Jack Sinnott, chief executive officer and chairman of Marsh inc., one of the largest insurance brokerages.
Diesel engine builders have been induction hardening
crankshaft bearing journals since the 1940s, and the process became nearly universal in the '60s with the demand for more power from existing engine designs.
How is a part heated to such temperatures that will allow for work hardening
? Metal cutting requires great forces and the action of a tool meeting the material is not always smooth.
of the arteries occurs in part because a key protein called elastin is replaced with a less elastic building material.
There is another concept in ADI which is commonly misinterpreted: hardening
the surface of ADI by "work hardening
." It is correct that the surface of an ADI part can be hardened by stressing but most of the hardening
is done by a mechanism other than work hardening
One of the most important applications of electron beam processing is surface layer hardening
of several steel or alloy steel parts used in modern manufacturing.
The new plant, just commissioned at the Birmingham facility, is designed for vacuum hardening
of alloy steels and annealing of stainless steels.
The property/casualty insurance market was hardening
A phosphate containing solution is used as the liquid for a shorter hardening
time of 5 min (7).