Exam (elaborations)
MATSE 259 Quiz And Exam Questions Correct Answers
- Course
- Institution
MATSE 259 Quiz And Exam Questions Correct Answers
[Show more]
Content preview
Solution 2024/2025Pepper
MATSE 259 Quiz And Exam Questions Correct
Answers
the weakest bong is the: ANS✔✔ fluctuating-induced dipole bond
which bond tends to form materials that are electrically/thermally conductive? ANS✔✔ metallic bonds
the ionic bond tends to create which type of material? ANS✔✔ ceramic
T/F? secondary bonds are stronger than primary bonds ANS✔✔ false
why are metals ductile compared to brittle ceramics? ANS✔✔ ductile metals have a sea of electrons whereas brittle
ceramics break due to slipping which causes same charged atoms to repel
the atomic radius of substitutional impurity in the host atom should be within _________% of the host atom ANS✔✔ +-
15 %
T/F? if the properties of a material are dependent on direction then it is called an Isotropic material. ANS✔✔ true
T/F? in a solution, the host material is the solute. ANS✔✔ true
list the rules that determine how much a substitutional impurity will dissolve into another metal ANS✔✔ 1. atomic size
(+- 15%)
2. crystal structure (similar struct.)
3. electronegativity (similar electroneg.)
4. valence electrons (similar number)
, Solution 2024/2025
Pepper
diffusion occurs within the metal over the long amount of time, mostly results in grain growth, this is termed as: ANS✔✔
self diffusion
the negative sign in the expression "J = -D(dC/dx)", indicates that the direction of diffusion is: ANS✔✔ down the
concentration
T/F? in vacancy diffusion the energy required is the summation if energy required to create a vacancy and energy to
move an atom. ANS✔✔ true
T/F? the interstitial diffusion is slower than vacancy diffusion ANS✔✔ false
why does the interstitial diffusion of carbon or nitrogen into a steel part (case hardening) create a harder surface?
ANS✔✔ the carbon fills interstitial sites causing compression in the surface of the material
yield strength is determined from the stress-strain plot using a strain offset of: ANS✔✔ 0.002 or 0.2%
the proportionality constant that relates the stress and strain is called: ANS✔✔ young's modulus
T/F? during elastic deformation, atomic bonds are broken and reformed with new neighbor atoms. ANS✔✔ false
T/F? engineering strain can be determined by the ratio of change in dimension to the original dimension. ANS✔✔ true
at which point on the stress strain curve does the material no longer elongate uniformly? ANS✔✔ ultimate tensile stress
(UTS)
during elastic deformation, the plot of stress vs strain is best represented as a: ANS✔✔ linear curve
the energy absorbed during elastic deformation of the material is reffered to as: ANS✔✔ resilience
The benefits of buying summaries with Stuvia:
Guaranteed quality through customer reviews
Stuvia customers have reviewed more than 700,000 summaries. This how you know that you are buying the best documents.
Quick and easy check-out
You can quickly pay through credit card or Stuvia-credit for the summaries. There is no membership needed.
Focus on what matters
Your fellow students write the study notes themselves, which is why the documents are always reliable and up-to-date. This ensures you quickly get to the core!
Frequently asked questions
What do I get when I buy this document?
You get a PDF, available immediately after your purchase. The purchased document is accessible anytime, anywhere and indefinitely through your profile.
Satisfaction guarantee: how does it work?
Our satisfaction guarantee ensures that you always find a study document that suits you well. You fill out a form, and our customer service team takes care of the rest.
Who am I buying these notes from?
Stuvia is a marketplace, so you are not buying this document from us, but from seller Schoolflix. Stuvia facilitates payment to the seller.
Will I be stuck with a subscription?
No, you only buy these notes for $16.99. You're not tied to anything after your purchase.
Can Stuvia be trusted?
4.6 stars on Google & Trustpilot (+1000 reviews)
75057 documents were sold in the last 30 days
Founded in 2010, the go-to place to buy study notes for 14 years now