2017 Technical Division Young Professional Poster Competition: Materials Processing and Manufacturing Division (MPMD)
Sponsored by: TMS Extraction and Processing Division, TMS Functional Materials Division, TMS Light Metals Division, TMS Materials Processing and Manufacturing Division, TMS Structural Materials Division
Program Organizers: TMS Administration
Monday 6:00 PM
February 27, 2017
Room: Hall B1
Location: San Diego Convention Ctr
YP-5 A Study of Brittle Fracture Mechanism of Non-quenched and Tempered N80 Tubing Used in Gas and Oil Well: Caihong Lu1; Chun Feng1; 1Tubular Goods Research Institute of China National Petroleum Corporation
Non-quenched and tempered N80 tubing belongs to economical low alloy steel. Chemical composition, microstructure, mechanical property, fracture morphology and micro-area chemical composition of the brittle fractured tubing was analyzed. The results showed that the inhomogeneous cooling after finish-rolling or normalization and segregation of V element results in hard-brittle banded martensite formation in the tube, which significantly reduced the toughness of tubing. N80 tube brittle fractured from the banded structure of martensite. Failure tubing was re-heat-treated, eliminated martensite by controlling cooling rate, uniform fine pearlite and ferrite, and good toughness tubing was obtained.
YP-6: Commercial-ready Large Scale Manufacturing of Light-weight Aluminum Metal Matrix Composite: Yuzheng Zhang1; Mark Sommer1; Marco Curreli1; Andrew Parker1; Miguel Verduzco1; William Harrigan1; Alfred Sommer1; 1Gamma Alloys
Light-weight aluminum metal matrix composite (MMC) exhibits superior strength and stiffness compared to its alloyed counterpart, especially at elevated temperatures, which makes this material an ideal candidate for high temperature applications in automobile, aerospace and energy industries. However, the use of aluminum MMC is limited due to its prohibitively high cost in scale-up production. In 2008, a path to commercialize aluminum MMC was laid out by Gamma Alloys LLC. A unique powder metallurgy approach was used to synthesize alumina nanoparticle reinforced aluminum MMC in a cost-effective way. A uniform distribution of spherical alumina nanoparticles was achieved in the matrix using a patented aluminum powder decoration technique. This technique is compatible with all aluminum alloy systems and thus customizable based on customer’s needs. Today, Gamma Alloys’ materials have found numerous applications from structural parts of automotive engines, to military helicopter transmissions and cleats for athletic running shoes.
YP-7: Octo-Strain: A Novel Multiaxial Loading Device for In-situ Stress Measurements through Neutron Diffraction: Justin Milner1; Thomas Gnäupel-Herold1; 1NIST
We report on the design and first results from a novel mechanical loading device that was conceived specifically for measuring the applied stresses using neutron diffraction. The purpose of this device is to obtain multiaxial yield stresses of sheet metal samples at large magnitudes of strain. The full strain field is determined using a dedicated digital image correlation system (DIC); thus, the macroscopic plastic strain tensor is known precisely in the neutron gauge volume. The device is an eight-arm device called Octo-Strain that was designed for a variety of planar straining scenarios and large magnitudes of strain as compared to cruciform testing. Now possible strain paths are a plane strain expansion followed by another plane strain expansion at a 45-degree angle to the major strain axis. The ability of 360-degree rotation allows measurements for any in-plane orientation of the scattering vector for the determination of the stress tensor.
YP-8: The Materials Science behind Ice Cream Making: Dana Zöllner1; 1TU Dresden
Almost everybody loves ice cream, and although it looks to be a very simple material it is indeed a very complex, composite material that allows the demonstration of a broad variety of different physical phenomena from the thermodynamic principle called Newton’s law of cooling (giving us a relation between heat loss and temperature differences) to the relationship between a materials microstructure and its macroscopic properties, e.g., in terms of Young’s modulus. In the present work we treat ice cream as a multi-phase, multi-scale material showing that is excellently suited to study the relationship between materials microstructures and external thermal and mechanical influences during manufacturing and processing.