Exam (elaborations)
MMET 207 Exam 2 - TAMU – Craig| Fall 2024( Questions & Answers)
- Course
- Institution
MMET 207 Exam 2 - TAMU – Craig| Fall 2024( Questions & Answers)
[Show more]
Content preview
MMET 207 Exam 2 - TAMU – Craig| Fall2024( Questions & Answers)
What microstructure does OQT indicate for a hypereutectoid steel? Correct Ans-Martensite
and Cementite
Low carbon steel % Correct Ans-<.3% carbon
Medium carbon steel % Correct Ans-.3%-.6%
High carbon steel % Correct Ans-.6%-2%
Carbon steel definition Correct Ans-An alloy of iron and carbon with carbon below 2%
Corrosion Correct Ans-deterioration of a material or its properties because of reaction with its
environment
problems caused by corrosion Correct Ans-weight gain/reduction, mechanical properties
affected
Factors affecting corrosion (3) Correct Ans-environment
material properties
physical conditions
,Requirements for corrosion to occur Correct Ans-anode (higher energy, active)
cathode (lower energy, passive)
metal path
electrolyte that will carry ions
difference in energy between anode & cathode
8 Basic types of corrosion Correct Ans--uniform
-pitting
-crevice
-galvanic
-stress corrosion cracking
-intergranular attack
-dealloying
-erosion
what is slurry erosion Correct Ans-material removal due to the combined action of corrosion
and wear. The source of the wear and an accelerator of the corrosion is abrasive particles
dispersed in a slurry.
anode = (high energy/active OR low energy passive)
cathode = (high energy/active OR low energy passive) Correct Ans-anode (higher energy,
active)
, cathode (lower energy, passive)
3 ways to control corrosion Correct Ans-design
environment control
material selection
electrolyte Correct Ans-liquid or other medium that carrys current
electrochemical corrosion process Correct Ans-changes of state aided by electron/ion
movement(conduction)
Galvanic cell Correct Ans-An electrochemical cell which converts the free energy of a
chemical process into electrical energy
Galvanic series chart material order Correct Ans-magnesium Anodic
zinc
lower carbon steel
tin
stainless steel
Metallurgical conditions Correct Ans-Chemical segregation
presence of multiple phases
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 ExamRoom. Stuvia facilitates payment to the seller.
Will I be stuck with a subscription?
No, you only buy these notes for $14.99. You're not tied to anything after your purchase.
Can Stuvia be trusted?
4.6 stars on Google & Trustpilot (+1000 reviews)
77988 documents were sold in the last 30 days
Founded in 2010, the go-to place to buy study notes for 14 years now