Strengthening of non-heat treatable alloys

[xearo0o]

hi all
I need help on understanding this kind of strengthening of non-heat treatable alloys in general "not a specific alloy"
these are the subjects

1-grain growth
2-point defect
3-strain hardening
thank you

 

[Astronuc]

Is one interested in a specific alloy system, or does one have a more general or broader scope.

Non heat-treatable alloy applies to certain Al-alloys, but can also apply to alloys of other elements like copper.

Non-heat treatable Al-alloys included:

1100
3003
4043
5005 5050 5056 5154 5356 5554 5556


Here is a more general discussions of strengthening mechanisms in steels.
http://www.key-to-steel.com/default.aspx?ID=CheckArticle&NM=11
http://www.key-to-steel.com/default.aspx?ID=CheckArticle&NM=107

In general and for non-ferrous alloys.
http://www.key-to-nonferrous.com/default.aspx?ID=CheckArticle&NM=128

More generally for steel/ferrous alloys - http://www.key-to-steel.com/default.aspx?ID=Articles
For nonferrous alloys - http://www.key-to-nonferrous.com/default.aspx?ID=Articles

The specific method for strengthening will depend on the alloy system.

Let me see what I can do for other alloy systems. Meanwhile, please review the material and ask questions.

 

[oswaler]

I can provide some insight into the strengthening of non-heat treatable alloys. Non-heat treatable alloys are those that do not undergo a significant change in properties when exposed to high temperatures. Therefore, other methods must be used to improve their strength. The three subjects you mentioned, grain growth, point defect, and strain hardening, are all important factors in the strengthening of non-heat treatable alloys.

1. Grain growth refers to the increase in the size of individual grains in a metal. In non-heat treatable alloys, grain growth can be controlled by adding alloying elements that inhibit the movement of grain boundaries. This results in smaller grain sizes, which can improve the strength and toughness of the alloy.

2. Point defects are imperfections in the crystal structure of a material. In non-heat treatable alloys, point defects can be used to strengthen the material through processes such as precipitation hardening. This involves the formation of small particles within the alloy that act as barriers to dislocation movement, increasing the strength of the material.

3. Strain hardening, also known as work hardening, is the process of strengthening a material by deforming it through cold working. In non-heat treatable alloys, this can be achieved by processes such as rolling, forging, or drawing. As the material is deformed, the dislocations within the crystal structure become more tangled, making it more difficult for them to move and resulting in a stronger material.

In conclusion, the strengthening of non-heat treatable alloys relies on a combination of controlling grain growth, utilizing point defects, and applying strain hardening techniques. By understanding and manipulating these factors, scientists and engineers can improve the strength and properties of non-heat treatable alloys for various applications. I hope this helps in your understanding of this topic.