Conveners
M2PoB - Materials II: Mechanical Properties, Metals and Non-Metals
- Eric Hellstrom (ASC / NHMFL / FSU)
- Robert Walsh (NHMFL / FSU)
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Mrs Alica Fedorikova (Technical University of Kosice)11/07/2017, 13:00Poster Presentation
The paper is focused on comparison of conventional cold-rolling and progressive cryorolling processing. The material cooling at cryogenic temperature before rolling is provided by liquid nitrogen bath. Research deals with the changes in temperature of the material during the rolling process and deformation resistance dependence on strain. Further, the influence of plastic deformation on the...
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Wesley Johnson (NASA Glenn Research Center)11/07/2017, 13:00Poster Presentation
This paper covers cryogenic, tensile testing and research completed on a number of epoxies used in cryogenic applications. Epoxies are used in many different applications; however, this research focused on the use of epoxy used to bond MLI standoffs to cryogenic storage tanks and the loads imparted to the tank through the MLI. To conduct testing, samples were made from bare stainless steel,...
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Zhixiong Wu (TIPC, CAS), Chuanjun HUANG (Technical Institute of Physics and Chemistry, Chinese Academy o), Mr Rongjin Huang (Technical Institute of Physics and Chemistry, Chinese Academy of Sciences, Beijing, P.R. China)11/07/2017, 13:00Poster Presentation
The glass-fiber reinforced plastic (GFRP) fabricated by the vacuum bag process was selected as the high voltage electrical insulation and mechanical support for the superconducting joints and the current leads of ITER Feeder system. To evaluate the cryogenic mechanical properties of the GFRP, the mechanical properties of the GFRP such as the inter-laminar shear strength (ILSS), the tensile...
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Mr Zheng Jianpeng (The Technical Institute of Physics and Chemistry of the Chinese Academy of Sciences (TIPCCAS)), Prof. Wang Junjie (The Technical Institute of Physics and Chemistry of the Chinese Academy of Sciences (TIPCCAS))11/07/2017, 13:00Poster Presentation
Abstract: The origin of residual stress can be attributed to mechanical process, heat treatment, phase transformation and so on. There are many methods of residual stress release. Compared with heat aging and vibration aging, cryogenic treatment has many advantages in releasing of residual stress. The residual stress relaxation of 7050 aluminum alloy is investigated in the present work. In...
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Dustin McRae (National High Magnetic Field Laboratory)11/07/2017, 13:00Poster Presentation
For the past couple decades, 316LN stainless steel has remained the “go-to” alloy for structural components intended for cryogenic temperature service, partially because of its favorable mechanical properties, but also because of the data available in the literature for T = 4 K. Some applications, for example the ITER Central Solenoid, require better room temperature strength and lower thermal...
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Dr Huang Chuanjun (State Key Laboratory of Technologies in Space Cryogenic Propellants, Technical Institute of Physics and Chemistry, Chinese Academy of Sciences, Beijing, PR China)11/07/2017, 13:00Poster Presentation
High strength aluminum alloy AA2219 in T87 temper is widely used in fabrication of cryogenic propellant tanks. In the present work, tensile properties, fracture toughness and fatigue crack growth rate (da/dN) of AA2219-T87 sheet at room temperature, 153 and 90 K were investigated. The elastic-plastic J-integral fracture toughness was conducted with a compact tension (CT) specimen by means of...
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Prof. Karl Hartwig (Texs A&M University)11/07/2017, 13:00Poster Presentation
Superconducting RF cavities are typically fabricated by forming cups from polycrystalline or large grained high purity Nb sheet material and welding these sections at the iris and equator to form a cavity string. An alternative approach is to form a tube into a monolithic cavity string by mechanical deformation. One problem with this approach is that inconsistent tube microstructure can lead...
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Mr Jason Springs (Texas A&M University)11/07/2017, 13:00Poster Presentation
Oxygen free high conductivity (OFHC) copper is the workhorse stabilizer for most low temperature superconducting wires and cables. It is also used for the pan-cake windings in Bitter electro-magnets. Copper is the material of choice for these applications because of its good electrical and mechanical properties, chemical compatibility with adjacent materials, and good joining...
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