September 2018 - Msepostdoc-list

FW: [Gradcontacts] Graduate School Professional Development Flyers: Fall 2018
by Son, Rosemary E 13 Sep '18

13 Sep '18

Please consider attending one of more of these itemes

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Seminar Notice for Xin Li Phuah's Preliminary Exam. Seminar Tuesday, Sept. 11, at 1:30, in HAMP 2108; Review same day, in ARMS 2326, 2:30 - 3:00; Exam same day at 3:00, in ARMS 2326
by Son, Rosemary E 10 Sep '18

10 Sep '18

Please consider attending the following: MATERIALS ENGINEERING SEMINAR "Probing the Mechanisms of Flash Sintering Through In Situ Characterization Techniques" By Xin Li Phuah Purdue MSE Ph.D. Preliminary Exam Advisor: Professor Haiyan Wang ABSTRACT Flash sintering is a new field-assisted sintering technique capable of sintering ceramics to near full density with reduced furnace temperatures and dwell time of only a few seconds. Since the first demonstration in 2010, flash sintering has gained considerable attention in the recent years, especially to explain the rapid densification process. Although several mechanisms have been proposed so far, the mechanism is still under debate and in situ characterization techniques have been employed for investigation. In situ diffraction has been a major characterization technique to monitor the crystal lattice in real time during flash sintering. This method could estimate increase in sample temperatures and concentration of defect generation, as well as observe any abnormal lattice expansion from directionality effects during the flash state. Particle sintering through in situ bias studies in TEM is another critical characterization technique to observe morphology changes during the sintering process. Through quantitative microstructural analysis, difference in shrinkage was revealed between the particles sintered with and without an electric field. Date: Tuesday, September 11, 2018 Time: 1:30 P.M. Place: HAMP 2108 PURDUE MSE [cid:image002.png@01D448ED.B1A6E1A0]

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Seminar Reminder for Xiaolong Bai's Ph.D. Final Exam. Seminar on Thursday, Sept. 6, at 8:30 a.m., in ARMS 1028; Exam same day at 9:30 a.m., in ARMS 2237
by Son, Rosemary E 05 Sep '18

05 Sep '18

Please consider attending the following Seminar: MATERIALS ENGINEERING SEMINAR “Large Shear Deformation on Automotive Aluminum Alloy” By Xiaolong Bai Purdue MSE Ph.D. Final Exam Advisors: Professor Kevin P. Trumble and Professor Srinivasan Chadrasekar ABSTRACT Aluminum alloy sheets are typically manufactured from cast slabs by multi-step rolling and annealing process. This process is very energy intensive, especially in the homogenization process after casting, which usually is conducted at 480 to 580℃ for up to 48 h. To reduce the processing steps and energy, a shear-based single-step deformation process, large strain extrusion machining (LSEM), was used to create strips from AA6013-T6 with and without preheating of the workpiece. Continuous strips were obtained from this alloy with low workability. Flow patterns through the thickness of the strips exhibited primary shear with grains inclined steeply to the faces of the strips, modified to varying degrees by secondary shear from friction with the tools at the surfaces. Through control of the deformation parameters (strain, strain rate and temperature), a wide range of microstructure could be achieved. In high-temperature LSEM, dynamic recrystallization occurs at lower temperatures than in commercial hot rolling processes. LSEM was performed directly on the as-cast AA6013 without homogenization. By appropriate combination of strain and strain rate, continuous strips were obtained in a single step without preheating directly from the as-cast workpiece. The highly deformed LSEM strip has enhanced workability. It can be cold rolled with at least 73% reduction in a single step without cracking. The strips were characterized by strong shear texture with partial {111} and <110> fibers. After annealing, a mixed texture containing simple shear texture and other texture develops. The annealed strips are expected to have better formability than commercial ones made by rolling. Based on the simple shear LSEM process, a novel way to produce aluminum strip/sheet material is introduced. The alloys are cast into disk-shape workpiece and then transferred to the LSEM line. In this line, continuous strips/sheets are obtained in a single step at room temperature. The materials are then coiled if needed and cold rolled to the final gauge. Finally, the strips/sheets are solution treated for further deformation processing. In this method, the conventional homogenization and hot rolling, including reversing and multi-stand hot rolling, are replaced by a single-step LSEM process at room temperature Date: Thursday, September 6, 2018 Time: 8:30 A.M. Place: ARMS 1028

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FW: [Gradcontacts] Friendly reminder: CCO Professional Development Workshop Series
by Son, Rosemary E 04 Sep '18

04 Sep '18

Hello, all Friendly reminder to all grad students & postdocs: the CCO's Professional Development Series starts tomorrow! Attendees are encouraged to bring their CV or resume to the first workshop. [cid:image001.png@01D44467.C2AACA00] Thank you. Amruta Amruta Inamdar, Ph.D. Career Services Consultant - Graduate Students Purdue University Center for Career Opportunities; YONG 245 amruta(a)purdue.edu<mailto:amruta@purdue.edu>; 765-494-1409 For grad students: Twitter<https://twitter.com/GradProfCareers> & Facebook<https://www.facebook.com/PurdueGradCareers/> My Office is a Safe Space

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ARMS Hallways
by Coar, Stacey L 04 Sep '18

04 Sep '18

All, This is a reminder that we cannot store unwanted items in public hallways. This is a safety and egress violation that we have been written-up for multiple times in the past. All unwanted furniture, equipment, supplies, crates, packing materials, etc. must either be disposed of via the dumpster out back OR kept within your room while waiting for the pick-up from Purdue Surplus. Thanks, Phil Qualio Building Deputy Neil Armstrong Hall of Engineering Potter Engineering Center 765.496.9757 - 765.494.7020

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