Question
In: Mechanical Engineering
What is easier: Homogeneous or heterogeneous nucleation? Why? What does an Isothermal Transformation (IT) Diagram tell us?
What is easier: Homogeneous or heterogeneous nucleation? Why?
What does an Isothermal Transformation (IT) Diagram tell us?
How do nucleation rates and diffusion rates influence the shape of the IT Diagram?
What do the letters "A", "F", "P", "B", and "M" mean on these diagrams?
What are the similarities and differences between the following microstructures: Coarse Pearlite; Fine Pearlite; Bainite; Spheroidite; and Tempered Martensite?
How is Martensite (not the tempered kind) formed, and how is it completely different from the other microstructures listed above?
What is the ONLY phase that can transform to into Pearlite, Bainite, or Martensite?
Can you make Tempered Martensite using a single heat treatment, or do you need to use multiple heat treatments?
Solutions
Expert Solution
Heterogeneous nucleation is energetically more favourable because heterogeneous nucleation takes place on already existing surface but for homogeneous nucleation we have to create a new surface.
Isothermal transformation diagrams are temperature vs time diagram on a logarithmic scale.it is useful for understanding the transformation of an alloy steel when it is cooled isothermally.
A- austenite f- ferrite p- pearlite. B- bainite M- martensite
Fine pearlite is harder than coarse pearlite .spherodite is extremely ductile and tough. Bainit is harder and stronger than pearlite. Martensite is hardest strongest and the most brutal of all also they all have different structures at different temperature
austenite can be transformed into pearlite bainite and martensite
samet mamat answered 2 years agoRelated Solutions
Question 1 (a) For the nucleation process, explain the difference between homogeneous and heterogeneous nucleation. Why...
1. What is the difference between homogeneous capital and heterogeneous capital? Why Would a theory of...
What is the role of the labor market in the Classical Model? What does it tell us? What does it not tell us?
What does a decision tree tell us and why is it useful? What is sensitivity analysis...
What does the IPAT formula tell us about the causes of environmental degradation? Why does the...
Differentiate between homogeneous and heterogeneous cultures. Is one more preferable for MNCs than the other? Why?
what does the variance and standard deviation tell us?
Why is the phenomenon of Learned Flavor Aversions important? What does it tell us about learning,...
What exactly does the pooled variance in an independent samples t-test tell us?Why is it necessary...
3. What does the test statistic tell us? 4. Why do we divide by the standard...
- Trevor Price bought 10-year bonds issued by Harvest Foods five years ago for $4,532.35. The bonds...
- How do you represent 5.1 (5 + 1/10) in binary? I know that it is 0101....
- More and more adults are considering commuting to work by bicycle rather than car, but few...
- Please answer these questions Data Processing and Analysis using python. Thank you In statistics, an outlier...
- Write a function file that accepts each of the four vectors as inputs. The function file...
- Kant says that to act morally is to act out of duty. How does this differ...
- Suppose you are trying to determine the capacity (in gallons) of the gas tank needed on...