Hardening

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Related to Age hardening: Precipitation hardening, Surface hardening

Hardening

1. The process by which a sudden change to the price of a commodity or futures contract slow and gradually corrects itself, bringing the price into alignment with fundamentals. See also: Reversion to the Mean.

2. A slow but steady rise in price for a futures market or contract.
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The most significant asphalt age hardening is normally observed when the asphalt is mixed with the aggregate in the hot mix plant.
In some cases where the product requires a painting stage, the final age hardening and stoving process can be combined.
Therefore, the mechanical properties of 990 gold were investigated after the metal was subjected to various combinations of solution heat treatment and quenching, age hardening, and cold working.
The phenomena under discussion has great practical significance, for they make possible the precipitation or age hardening of metals, an extremely important way of hardening of metals, especially in commercial strengthening of non-ferrous alloys, e.g.
(2) Although the YS decreased with aging temperature, the curves showed maxima and minima which maybe interpreted in terms of the sequence of precipitation and coarsening of the different age hardening phases in these alloys [23], as shown in Figure 8.