Sign Up Sign Up

Connect with:
Google
or use


Have an account? Sign In Now

Sign In Sign In

Connect with:
Google
or use


Forgot Password?

Don't have account, Sign Up Here

Forgot Password Forgot Password

Lost your password? Please enter your email address. You will receive a link and will create a new password via email.


Have an account? Sign In Now

Sorry, you do not have permission to ask a question, You must login to ask a question.

Connect with:
Google
or use


Forgot Password?

Need An Account, Sign Up Here

Please briefly explain why you feel this question should be reported.

Please briefly explain why you feel this answer should be reported.

Please briefly explain why you feel this user should be reported.

Sign InSign Up

Askmemetallurgy

Askmemetallurgy Logo Askmemetallurgy Logo

Askmemetallurgy Navigation

  • MCQs
    • Metallurgical Engineering mcq
    • Topic Wise mcq
    • Numericals
  • GATE Papers
  • Notes
Search
Ask A Question

Mobile menu

Close
Ask a Question
  • Home
  • Categories
  • GATE Papers
  • Recent Posts
  • Badges
  • MCQs
    • Metallurgical Engineering mcq
    • Topic Wise mcq
    • Numericals
  • GATE Papers
  • Notes
Home/Questions/Q 1016
Next
In Process
Raj
RajCopper
Asked: April 27, 20202020-04-27T02:21:57+05:30 2020-04-27T02:21:57+05:30In: Physical Metallurgy & Heat treatment

Hexaferrum – How it will form ?

Hexaferrum – How it will form ?
question
  • 0
  • 44
  • 268
  • 0
  • 0
Share
  • Facebook

    You must login to add an answer.

    Connect with:
    Google
    or use


    Forgot Password?

    Need An Account, Sign Up Here

    4 Answers

    • Voted
    • Oldest
    • Recent
    1. [email protected] Platinum
      2020-05-02T17:48:14+05:30Added an answer on May 2, 2020 at 5:48 pm

      Hexaferrum and epsilon iron are synonyms for the hexagonal  closed packed phase of iron that is stable only at extremely high pressure. At a pressure of 130 kbar  and room temp, the Bcc ferrite powder transformed to the Hcp phase. When the pressure was lowered,  epsilon Fe transformed back to FerritRead more

      • Hexaferrum and epsilon iron are synonyms for the hexagonal  closed packed phase of iron that is stable only at extremely high pressure.
      • At a pressure of 130 kbar  and room temp, the Bcc ferrite powder transformed to the Hcp phase. When the pressure was lowered,  epsilon Fe transformed back to Ferrite rapidly.

      See less
      • 2
      • Share
        Share
        • Share on WhatsApp
        • Share on Facebook
        • Share on LinkedIn
        • Share on Twitter
    2. metagate.in Platinum GATE Metallurgy Coaching | Faculty with 7 years of Teaching Experience | 50% of Selections in all PSUs
      2020-05-02T21:05:47+05:30Added an answer on May 2, 2020 at 9:05 pm

      If you apply high pressure on BCC Fe....the stacking sequence changes from ABCDEF to ABAB... that is hexaferrum

      If you apply high pressure on BCC Fe….the stacking sequence changes from ABCDEF to ABAB… that is hexaferrum

      See less
      • 2
      • Share
        Share
        • Share on WhatsApp
        • Share on Facebook
        • Share on LinkedIn
        • Share on Twitter
    3. Gaurav Kumar Gold B.TECH, NIT DURGAPUR
      2020-05-10T20:07:08+05:30Added an answer on May 10, 2020 at 8:07 pm

      At pressures above approximately 10 GPa and temperatures of a few hundred kelvin or less, α-iron changes into a hexagonal close-packed (hcp) structure, which is also known as ε-iron or hexaferrum

      At pressures above approximately 10 GPa and temperatures of a few hundred kelvin or less, α-iron changes into a hexagonal close-packed (hcp) structure, which is also known as ε-iron or hexaferrum

      See less
      • 0
      • Share
        Share
        • Share on WhatsApp
        • Share on Facebook
        • Share on LinkedIn
        • Share on Twitter
    4. C Patel Metallurgy Platinum⭐ GATE Metallurgy Coaching
      2020-12-18T21:39:54+05:30Added an answer on December 18, 2020 at 9:39 pm

      It is formed under high pressure.

      It is formed under high pressure.

      See less
      • 0
      • Share
        Share
        • Share on WhatsApp
        • Share on Facebook
        • Share on LinkedIn
        • Share on Twitter

    Sidebar

    Related Questions

      • On: July 10, 2022
      • Answers: 0

      Extrusion Related question

    • Dissolved oxygen content in steel
      • On: December 19, 2021
      • Answers: 0

      Dissolved oxygen content in steel

    • I need to find out Carbon’s Boudouard reaction by using these 2 reaction and Hess Law
      • On: October 27, 2021
      • Answers: 2

      I need to find out Carbon's Boudouard reaction by using these 2 reaction and Hess Law

      • On: October 19, 2021
      • Answers: 0

      We are experiencing a higher Rockwell reading in a grade of 1035 steel. The heat treatment supervisor as made the ...

      • On: June 23, 2021
      • Answer: 1

      How to remove tempered embritlement ?

    Top Users

    Arpita Samal

    Arpita Samal

    • 7 Questions
    • 1,687 Points
    Platinum⭐
    digbijaya igit

    digbijaya igit

    • 11 Questions
    • 1,415 Points
    Platinum⭐
    Rohit.km

    Rohit.km

    • 2 Questions
    • 1,408 Points
    Platinum⭐

    Adv 120×600

    Explore

    • Home
    • Categories
    • GATE Papers
    • Recent Posts
    • Badges

    Footer

    Askmemetallurgy.com

    Askmemetallurgy is the one stop solution for all the need of a Metallurgical Engineers. Askmemetallurgy provides its users with a variety of services to help meta students from semester to his career path. Learn more.

    Legal Stuff

    • Privacy Policy
    • Terms Of Use

    Help & Services

    • FAQ
    • Contact Us

    Copyright © 2021 Askmemetallurgy.com, All rights reserved. Registration on or use of this site constitutes acceptance of our Privacy Policy
    DMCA.com Protection Status