January 2019 - Msepostdoc-list

Seminar Reminder for B. Stiven Puentes Rodriguez's Preliminary Exam Today, Friday, January 25, at 9:30 a.m., in ARMS 1028
by Son, Rosemary E 25 Jan '19

25 Jan '19

Please consider attending the following: MATERIALS ENGINEERING SEMINAR "Goss Texture Development on Electrical Steel Alloys" By Brhayan Stiven Puentes Rodriguez Purdue MSE Ph.D. Preliminary Exam Advisor: Professor Kevin Trumble ABSTRACT The development of a methodology to consistently produce Goss textured electrical steel sheet meant a big advancement for the electrical steel industry. Grain oriented electrical steels are characterized for having a strong Goss texture, which means having the {110} planes parallel to sheet surface and the <001> directions parallel to the rolling direction. As <001> is the easy direction of magnetization for Fe-α, magnetic flux density can be improved through the rolling direction. However, magnetic properties get to be inferior in all other directions. Grain oriented electrical steel are designed to be used on stationary applications such as transformers, where the magnetic flux can be controlled to go parallel to the rolling direction, hence, parallel to the easy direction of magnetization. Throughout this work, the models proposed to explain Goss texture formation will be explained and analyzed. Some concepts necessary to understand the topic will be covered such as texture, texture representation, recrystallization (nucleation and growth), and secondary recrystallization (the coincidence site lattice boundary model and the high energy boundary model). Date: Friday, January 25, 2019 Time: 9:30 A.M. Place: ARMS 1028

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Seminar CANCELATION for Dongsheng Wen's . It will be rescheduled for a later time.
by Son, Rosemary E 18 Jan '19

18 Jan '19

This Preliminary Exam Seminar is postponed. It will be rescheduled for a later time: MATERIALS ENGINEERING SEMINAR "Thermodynamics of Suzuki Segregation and Stacking Fault Energy" By Dongsheng Wen Purdue MSE Ph.D. Preliminary Exam Advisor: Professor Michael Titus ABSTRACT Suzuki segregation is microscale solute segregation occurring at stacking faults in crystalline materials. It is a common phenomenon that exists in a variety of materials including metallic alloys, ceramics and polymers. Segregation at this length scale has profound impacts on macroscopic properties due to their close relationship with the stacking fault energy and the electronic structure. Incorporating Suzuki segregation in materials design process requires a comprehensive understanding of the thermodynamics of the phenomenon. It was not until recent decades that experimental and computational techniques allowed researchers to study this problem. This review provides a broad view of Suzuki segregation on several types of materials. Two major thermodynamic treatments are discussed to link the segregation to the stacking fault energy. Among all the materials, extensive focus has been on Ni- and Co-based superalloys because segregation to stacking faults strongly affects their high temperature creep behavior. Thermodynamic study of the equilibrium of segregation and the stacking fault energy can not only benefit superalloy design but also may shed light on similar problems in other materials. Date: Tuesday, January 22, 2019 Time: 1:30 P.M. Place: ARMS 1103

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Seminar Notice for B. Stiven Puentes Rodriguez's Preliminary Exam on Friday, January 25, at 9:30 a.m., in ARMS 1028
by Son, Rosemary E 16 Jan '19

16 Jan '19

Please consider attending the following: MATERIALS ENGINEERING SEMINAR "Goss Texture Development on Electrical Steel Alloys" By Brhayan Stiven Puentes Rodriguez Purdue MSE Ph.D. Preliminary Exam Advisor: Professor Kevin Trumble ABSTRACT The development of a methodology to consistently produce Goss textured electrical steel sheet meant a big advancement for the electrical steel industry. Grain oriented electrical steels are characterized for having a strong Goss texture, which means having the {110} planes parallel to sheet surface and the <001> directions parallel to the rolling direction. As <001> is the easy direction of magnetization for Fe-α, magnetic flux density can be improved through the rolling direction. However, magnetic properties get to be inferior in all other directions. Grain oriented electrical steel are designed to be used on stationary applications such as transformers, where the magnetic flux can be controlled to go parallel to the rolling direction, hence, parallel to the easy direction of magnetization. Throughout this work, the models proposed to explain Goss texture formation will be explained and analyzed. Some concepts necessary to understand the topic will be covered such as texture, texture representation, recrystallization (nucleation and growth), and secondary recrystallization (the coincidence site lattice boundary model and the high energy boundary model). Date: Friday, January 25, 2019 Time: 9:30 A.M. Place: ARMS 1028

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Request a list of Post Docs and office space
by Son, Rosemary E 15 Jan '19

15 Jan '19

Dear Faculty and Post Docs, I would like a complete list of Post Docs and office numbers whether in ARMS or elsewhere. I have a complete list of graduate students and advisors, but I do not have a complete list of Post Docs. I appreciate your help with this. I would also like to say the Safely Committee is in the process of ensuring that all offices are safe and do not contain samples or chemicals. We would like to encourage you to store your samples outside your office space. There are lockers and should be space in labs. Please discuss with us your questions regarding the storage of materials. There will be a safety inspection conducted soon and we could be held in violation of REM rules. Please let myself or Prof. Erk know of any concerns you may have. Sincerely, Rosemary

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Seminar Notice for Dongsheng Wen's Preliminary Exam. Seminar, Jan 22, at 1:30, in ARMS 1103.
by Son, Rosemary E 14 Jan '19

14 Jan '19

Please consider attending the following: MATERIALS ENGINEERING SEMINAR "Thermodynamics of Suzuki Segregation and Stacking Fault Energy" By Dongsheng Wen Purdue MSE Ph.D. Preliminary Exam Advisor: Professor Michael Titus ABSTRACT Suzuki segregation is microscale solute segregation occurring at stacking faults in crystalline materials. It is a common phenomenon that exists in a variety of materials including metallic alloys, ceramics and polymers. Segregation at this length scale has profound impacts on macroscopic properties due to their close relationship with the stacking fault energy and the electronic structure. Incorporating Suzuki segregation in materials design process requires a comprehensive understanding of the thermodynamics of the phenomenon. It was not until recent decades that experimental and computational techniques allowed researchers to study this problem. This review provides a broad view of Suzuki segregation on several types of materials. Two major thermodynamic treatments are discussed to link the segregation to the stacking fault energy. Among all the materials, extensive focus has been on Ni- and Co-based superalloys because segregation to stacking faults strongly affects their high temperature creep behavior. Thermodynamic study of the equilibrium of segregation and the stacking fault energy can not only benefit superalloy design but also may shed light on similar problems in other materials. Date: Tuesday, January 22, 2019 Time: 1:30 P.M. Place: ARMS 1103

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ARMS office space safety issues; must be corrected by Feb 1st
by Coar, Stacey L 10 Jan '19

10 Jan '19

Dear MSE graduate students and post docs, who have offices in ARMS, Perhaps a New Years resolution to be a more efficient and effective researcher starts with a clean, safe, and organized office space... On Dec 14th, I conducted a safety inspection of the graduate student offices in ARMS and, unfortunately, I observed a number of issues that must be corrected before my next safety inspection on Feb 1st: 1. All extension cords should be removed and, if necessary, replaced with power strips (surge protectors). 2. Excess combustible materials (paper, cardboard, trash, etc) and old or unused electronics should be discarded or properly stored. 3. Heavy materials (old electronics, books, boxes, etc) should not be stored on top of the metal storage lockers or on high shelves, where they could fall from and cause injury. 4. ***No chemicals or samples or lab coats can be stored in your office.*** The only approved chemicals for use and storage in your office are "administrative" chemicals (pens, markers, cleaners). All other research-related chemicals, samples, and lab coats (including other contaminated PPE) should be properly stored within the lab spaces where you work, in ARMS or elsewhere. You should talk to your research advisor if you need help finding suitable storage options within your designated laboratory space. If these issues are not corrected by Feb. 1st, your office space privileges in ARMS will be revoked. I sincerely hope it doesn't come to this however... To help out, next week a few big rolling trashcans will be placed near the MSE office spaces for you all to use. I will also be available in ARMS this Monday afternoon (Jan 14th) from 2:30-4:30 pm to answer questions and give you advice/guidance about your office. So, Monday afternoon might be a nice time to start the cleaning process... You can also talk with me at that time regarding any questions or concerns you may have about your office situation (e.g., you share an office with "Pig-Pen"...google it). Good luck to all of you, and perhaps you might find some $$$ hidden away in your desk drawer... Prof. Erk Chair, MSE Safety Committee

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FW: New! Engineering Academic Career Club - Spring Callouts!
by Son, Rosemary E 08 Jan '19

08 Jan '19

Dear Fellow Graduate Students, Welcome back to campus! This semester we are launching a new club for engineering graduate students and post-docs interested in pursuing an academic career. Have you wondered what it takes to write a competitive tenure-track application? Are you interested in networking with other Purdue students interested in academic careers? Do you want resources to enhance your teaching and mentoring experience? If you’re like me, then the answer to all these questions is YES! That’s why we’ve started the Engineering Academic Career Club (EACC) - to help you develop teaching, mentoring, and research skills, connect you with like-minded people across engineering disciplines, and run workshops on writing application materials like teaching and research statements. To hear more about events coming up this spring, current tools available, and get involved, please join me at one of our callout meetings next week. We’ll provide pizza and drinks. Please use the links below to RSVP by Mon 1/14 at 9am so that we can get an estimate for food! Monday, January 14 at 5:30pm (link<https://purdue.ca1.qualtrics.com/jfe/form/SV_3Ua1JB3Uj840vlP>), PGSC Thursday, January 17 at 12:30pm (link<https://purdue.ca1.qualtrics.com/jfe/form/SV_4OAoj2hDj96wdgN>), PGSC If you’re interested but can’t make the callout add us on Boilerlink (link<https://boilerlink.purdue.edu/organization/eacc>) to stay up to date on upcoming events. Hope to see you there! Hasti Veeraraghava Raju Engineering Academic Career Club President PhD Student, Mechanical Engineering

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Seminar Reminder for Erich Weaver's Preliminary Exam Jan 8, at 1:30 p.m., in ARMS 1103
by Son, Rosemary E 07 Jan '19

07 Jan '19

Please consider attending the following: MATERIALS ENGINEERING SEMINAR "Liquid-Phase Sintering of Boron Carbide" By Erich A. Weaver Purdue MSE Ph.D. Preliminary Exam Advisors: Professor Jeffrey P. Youngblood and Professor Rodney W. Trice ABSTRACT Boron carbide is a ceramic material valued for its extreme hardness and low density. It is used in a variety of applications where high hardness is beneficial, such as sand-blasting nozzles, grinding and polishing media, wear-resistant coatings, and lightweight ballistic armor. Despite its favorable properties, the production of dense boron carbide components has been a continual challenge. Hot-pressing and hot isostatic pressing are widely used in industry, but face limitations when attempting to produce complex geometries. Pressureless, liquid-phase sintering is an alternative method that could allow for the production of a variety of sintered geometries. In this work, sintering aids that undergo a reaction with boron carbide to form a liquid phase during sintering are reviewed. The additional densification mechanisms present during liquid-phase sintering will be discussed, as well as the resulting microstructures and changes in mechanical properties. Finally, the limitations of current boron carbide sintering aid systems will be explored. Date: Tuesday, January 8, 2019 Time: 1:30 P.M. Place: ARMS 1103

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Seminar Notice for Erich Weaver's Preliminary Exam Jan 8, at 1:30 p.m., in ARMS 1103
by Son, Rosemary E 03 Jan '19

03 Jan '19

Please consider attending the following: MATERIALS ENGINEERING SEMINAR "Liquid-Phase Sintering of Boron Carbide" By Erich A. Weaver Purdue MSE Ph.D. Preliminary Exam Advisors: Professor Jeffrey P. Youngblood and Professor Rodney W. Trice ABSTRACT Boron carbide is a ceramic material valued for its extreme hardness and low density. It is used in a variety of applications where high hardness is beneficial, such as sand-blasting nozzles, grinding and polishing media, wear-resistant coatings, and lightweight ballistic armor. Despite its favorable properties, the production of dense boron carbide components has been a continual challenge. Hot-pressing and hot isostatic pressing are widely used in industry, but face limitations when attempting to produce complex geometries. Pressureless, liquid-phase sintering is an alternative method that could allow for the production of a variety of sintered geometries. In this work, sintering aids that undergo a reaction with boron carbide to form a liquid phase during sintering are reviewed. The additional densification mechanisms present during liquid-phase sintering will be discussed, as well as the resulting microstructures and changes in mechanical properties. Finally, the limitations of current boron carbide sintering aid systems will be explored. Date: Tuesday, January 8, 2019 Time: 1:30 P.M. Place: ARMS 1103

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