Known bicycle materials （4）

Reinforced materials

Rearrangement of the metal is referred to in: crystal will produce mobile phenomenon exists between atoms (clearances, moved to remove crystallization. When the metal will occur rearrangement phenomenon. Strengthen material also is trying to create don't happen rearrangement of the phenomenon. Here introduces four kinds of materials. The crystallology aggrandizement, precipitation strengthening, through the hardening processing to enhance the process, to strengthen the crystals.

The crystallology strengthening
In iron melt into the matrix materials such as chrome, molybdenum, maternal materials into different radius of crystal structure. This is called interstitial atoms. In this alone to explain this phenomenon. The atom radius is small in the phenomenon of atoms.
"In the elevator has nine big man has quite hold together, at this time, in order to prevent the child in children was bad, men began to rely on to around".
The atom radius than matrix of atoms came in
"In the elevator has nine big man has quite hold together, one under the elevator, but also in the big niang, obese men began to rely on to around". If the above phenomenon in crystal happened near the stress, makes the rearrangement phenomenon. Using this method is MuGang chromium.

Precipitation strengthening

At present, the aluminum alloy products generally bicycle materials. The method of aluminum in aluminum project described in this only strengthens the principle. Solid solution of additives in metal, can produce saturation (not completely dissolved), add in excess of the quantity saturation, because not completely dissolved and precipitation.
Specifically, improve the temperature increases, the volume is saturated with the instantaneous start slowly dissolve completely cooled, precipitating. With salt to do the experiment will see this phenomenon, salt, rapid cooling exhalation tiny salt crystallization, but if not, metal cooling speed, not separation and forced to make it solid solution.
In the condition of the metal, the temperature increases it slowly. In this note is not enough, precipitating separation is not high, low temperature, the temperature can't also called heat treatment temperature (also called artificial aging treatment). The ideal is the crystallization of precipitation, uniform fine but not easily, material deformation cooperatively. For example: "walk in the forest, if the tree is easy to walk (big), and the tree was easy to go (not many words are tiny exhalation)", and the sense of separation material as tiny more difficult.

To strengthen the processing method of hardness
For materials for machining is produced, and rearrangement of materials. The rearrangement of various materials is extremely complex, not this, simply say: not line neatly rearrangement and complex nocd together, material deformation is difficult. When walking on the road, such as increasing the people walking (rearrangement of proliferation), to advance (rearrangement of movement, thus not easily become difficult deformation). Using the method of drawing and have pipe SHOT PEENING SHOT PEENING sclerosis (.).

The process to enhance crystals
Crystalline under high temperature, cold after completely dissolved by subtle organization. This process is quenched. After a subtle change, rearrangement of crystallization of the continuity was hard to keep moving, the results are enhanced materials. Example: one can activities (the scope of smaller).