List of metals or alloys with fatigue limit

In summary, the conversation discusses the concept of fatigue limits in metals and alloys. Fatigue limits refer to the maximum pressure that a metal or alloy can withstand before it starts to deteriorate. Steel and titanium are known to have fatigue limits, while aluminum does not. The existence of fatigue limits is debated among some, but for the purpose of the conversation, it is assumed to be real. The topic is more relevant to engineering or materials science rather than chemistry. The possibility of other metals or alloys having fatigue limits is also mentioned, suggesting the need to seek advice from an engineering or materials science forum.
  • #1
TheAzn
15
0
I know that steel and titanium have fatigue limits.

Just to clarify, metals or alloys with fatigue limits are metals that - as long as they experience pressures that lower than the limits - can last "indefinitely".

Aluminum, for example, does NOT have a fatigue limit. No matter how small the forces, they will add up over time and the aluminum will disintegrate.

I know that some people do not consider fatigue limits to be real, but just assume that it exists for now.

Are there any other types of metals or alloys that can be considered to have "fatigue limits"?
 
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  • #2
Sounds more of an engineering or material question than chemistry.
 
  • #3
Borek said:
Sounds more of an engineering or material question than chemistry.
True, I will try that sub-forum instead.
 

1. What is a fatigue limit?

The fatigue limit, also known as the endurance limit, is the maximum stress level at which a material can withstand an infinite number of stress cycles without experiencing failure or fatigue.

2. How is fatigue limit determined?

Fatigue limit is determined through a series of fatigue tests, where a material is subjected to repeated stress cycles until it fails. The stress level at which failure occurs is then recorded as the fatigue limit for that particular material.

3. What factors affect the fatigue limit of a material?

The fatigue limit of a material can be affected by various factors such as the material's composition, microstructure, surface condition, and environmental conditions. Other factors include the magnitude and frequency of applied stress, as well as the presence of notches or defects in the material.

4. Why is the fatigue limit important in materials science?

The fatigue limit is an important parameter in materials science as it determines the maximum stress level that a material can withstand without experiencing failure. This information is crucial in the design and selection of materials for applications where the material will be subjected to repeated stress cycles, such as in aircraft components or machine parts.

5. Can the fatigue limit of a material be improved?

Yes, the fatigue limit of a material can be improved through various methods such as heat treatment, surface treatments, and alloying. These methods can help to increase the strength and resistance to fatigue of a material, thereby improving its fatigue limit.

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