Why Does an Al-17Si Alloy Solidify Over a Range of Temperatures?

  • Thread starter Thread starter pukb
  • Start date Start date
  • Tags Tags
    Alloy
AI Thread Summary
An Al-17Si alloy solidifies over a range of temperatures due to the presence of multiple phases, unlike pure metals that solidify at a specific temperature. The growth of primary silicon occurs after undercooling, continuing until the eutectic arrest temperature is reached. This behavior is attributed to the varying equilibrium phase content in hypo-eutectic compositions as temperature changes. The discussion highlights the complexity of alloy solidification and the influence of composition on cooling curves. Understanding these principles is essential for predicting the solidification behavior of aluminum-silicon alloys.
pukb
Messages
94
Reaction score
1
Why does an alloy solidify over a range of temperature unlike a pure metal.
Consider Al-17Si alloy.
Growth of primary Si after undercooling does not take place at liquidus temperature but temperature keeps on decreasing until it reaches eutectic arrest temperature. I am not able to understand why p-Si being one component phase has a different cooling curve compared to its pure alloy( pure Si).
 
Engineering news on Phys.org
It's not clear what you're referring to. Are you talking about equilibrium cooling of a hypo-eutectic composition, where the equilibrium phase content varies with temperature?
 

Thread 'How could I make it so ferrofluid drops do not coalesce?'

Hello! I've been brainstorming on how to prevent a lot of ferrofluid droplets that are in the same container. This is for an art idea that I have (I absolutely love it when science and art come together) where I want it to look like a murmuration of starlings. Here's a link of what they look like: How could I make this happen? The only way I can think of to achieve the desired effect is to have varying droplet sizes of ferrofluid suspended in a clear viscous liquid. Im hoping for the...
View full post »

Thread 'How do you fabricate microfluidic chips in your lab?'

Hello everyone! I am curious to learn how laboratories handle in-house chip manufacturing using soft lithography for microfluidics research. In the lab where I worked, only the mask for lithography was made by an external company, whereas the mold and chip fabrication were carried out by us. The process of making PDMS chips required around 30 min–1 h of manual work between prepolymer casting, punching/cutting, and plasma bonding. However, the total time required to make them was around 4...
View full post »

Similar threads

Differentiate Primary Al & Eutectic Al in Al-17Si Alloys
Replies
2
Views
4K
B New Theory Explaining Why Certain Alloys don't change size when heated
Replies
1
Views
2K
Why Not Titanium Alloy Rocket Engine Nozzles?
Replies
19
Views
5K
Understanding the Role of Aluminum in High Temperature Super Alloys
Replies
2
Views
6K
How Does the Cooling Curve of a 40 wt% Ag Alloy Look on the Ag-Cu Phase Diagram?
Replies
1
Views
9K
Examining Ductility of Al-Cu Alloy: Brittle vs Copper & Aluminum
Replies
3
Views
4K
I Why does the core collapse happen so fast in a supernova?
Replies
3
Views
3K
Cooking (Thermodynamics) Problems
Replies
14
Views
4K
Why Does Entropy Behave Differently in Water and Steam with Temperature Changes?
Replies
3
Views
10K
Estimating the impact of CO2 on global mean temperature
2
Replies
89
Views
37K

Hot Threads

Recent Insights

Back
Top