Mechanical and Creep Behavior of Advanced Materials: A SMD Symposium Honoring Prof. K. Linga Murty: Introductory Session: Unique Mechanical Behavior and Technologies
Sponsored by: TMS Structural Materials Division, TMS: Mechanical Behavior of Materials Committee, TMS: Nuclear Materials Committee
Program Organizers: Indrajit Charit, University of Idaho; Yuntian Zhu, North Carolina State University; Stuart Maloy, Los Alamos National Laboratory; Peter Liaw, University of Tennessee - Knoxville
Monday 8:30 AM
February 27, 2017
Location: San Diego Convention Ctr
Session Chair: Indrajit Charit, University of Idaho; Yuntian Zhu, North Carolina State University
8:30 AM Introductory Comments: A short commentary on Prof. K. Linga Murty's short biography and seminal contributions to the field of mechanical and creep behavior of materials
8:35 AM Keynote
Creep, Deformation and Fracture Studies of Materials for Various Technologies in the Nuclear Materials Research Group at NC State: Korukonda Murty1; 1North Carolina State University
A brief outline of the research activities during the past 3 decades in the Nuclear Materials Research group at NC State University will be summarized that comprise of creep mechanisms in materials, reliability of solders in electronic packaging, DSA and radiation embrittlement of ferritic steels, anisotropic biaxial creep of hcp metals with emphasis on Zircaloy cladding, condition monitoring of structural materials using ABI, non-interactive NMR studies of dynamical behavior of point and line defects during deformation, and radiation effects in nanocrystalline materials. All the described aspects are the outcomes of research experiences of the author starting from his MS thesis at Cornell University on creep of alpha iron and doctoral thesis research on NMR studies followed by post-doctoral research at the University of California in Berkeley on creep and superplasticity, and University of Newcastle, Australia on radiation effects on yield point phenomena in steels.
9:05 AM Keynote
Fundamental Discovery of Q-phases and Direct Conversion of Carbon into Diamond and h-BN into c-BN: Jagdish (Jay) Narayan1; Anagh Bhaumik1; 1North Carolina State University
This lecture addresses fundamental underpinnings of Q-phases and direct Conversion of carbon into diamond and h-BN into c-BN in the form of nanocrystals, microcrystals, nanoneedles and microneedles, and large-area single crystal films for a variety of applications, ranging from abrasives and cutting tools to biosensors and biomedical applications. Mechanical properties are controlled by defects such as twins. According to the phase diagram it can be done only at very high pressures and temperatures (over 120,000Atm and 5000K). Our recent discovery showed that carbon can be converted directly into diamond at atmospheric pressure and ambient temperature in air by laser melting and quenching the super undercooled state. The undercooled state can be quenched into a new state of carbon (Q-carbon) or diamond or the mixture of the two. Similarly, h-BN can be converted into Q-BN or c-BN or the mixture of the two by controlling the undercooling and quenching rate.