Academic literature on the topic 'Alloy grain structure'

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Journal articles on the topic "Alloy grain structure"

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Chi, Xiang, Ying Li, De-quan Er, et al. "Study of Structure and Magnetic Properties of SmCo10 Alloy Prepared by Different Methods." Advances in Materials Science and Engineering 2018 (2018): 1–10. http://dx.doi.org/10.1155/2018/6457534.

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In this paper, the phase compositions, microstructures, atomic structures, and magnetic properties of Co-rich SmCo10 alloys prepared by arc-melting, annealing, and melt-spinning were studied. It was found that as-cast alloy is composed of Th2Zn17-type Sm2Co17 matrix with an average grain size of ∼45 μm accompanied by lamellar eutecticum (consisting of α-Co and Th2Zn17-type Sm2Co17) distributed at grain boundaries. The annealed alloy has the same phase composition and phase distribution as the as-cast alloy except that the average grain size decreases to ∼35 μm, and the eutecticum has more homo
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Perevalova, O. B., N. A. Koneva, and É. V. Kozlov. "Grain structure of Ni3Fe alloy." Russian Physics Journal 42, no. 11 (1999): 952–59. http://dx.doi.org/10.1007/bf02509688.

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Yang, Zhenquan, Aibin Ma, Huan Liu, et al. "Multimodal Microstructure and Mechanical Properties of AZ91 Mg Alloy Prepared by Equal Channel Angular Pressing plus Aging." Metals 8, no. 10 (2018): 763. http://dx.doi.org/10.3390/met8100763.

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Developing cost-effective magnesium alloys with high strength and good ductility is a long-standing challenge for lightweight metals. Here we present a multimodal grain structured AZ91 Mg alloy with both high strength and good ductility, prepared through a combined processing route of low-pass ECAP with short-time aging. This multimodal grain structure consisted of coarse grains and fine grains modified by heterogeneous precipitates, which resulted from incomplete dynamic recrystallization. This novel microstructure manifested in both superior high strength (tensile strength of 360 MPa) and go
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Mackenzie, R. A. D., M. D. Vaudin, and S. L. Sass. "Grain boundary structure in Ni3Al." Proceedings, annual meeting, Electron Microscopy Society of America 46 (1988): 602–3. http://dx.doi.org/10.1017/s0424820100105072.

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Ni3Al is a potentially useful high temperature alloy. In its single crystal form it exhibits good ductility, however in polycrystalline form the pure alloy is highly prone to intergranular failure. It has been seen that in slightly nickel-rich alloys the addition of small amounts of boron has the effect of dramatically increasing the material ductility and of changing the failure mode from intergranular to transgranular. In alloys which have been ductilitized by boron addition, atom probe investigation has shown the boron to be segregated to grain boundaries. This segregation may induce a chan
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Zhao, Da Zhi, Ke Hu, and Qi Chi Le. "The Influence of Un-DRXed Grains on Mechanical Properties of Mg-Zn-Mn-La-Ce Alloys." Key Engineering Materials 821 (September 2019): 237–43. http://dx.doi.org/10.4028/www.scientific.net/kem.821.237.

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The effect of extrusion temperature on the mechanical properties of low-Zn containing wrought Mg alloys manufactured by indirect extrusion was studied. The experiments were performed on Mg-Zn-Mn based alloy with addition of LaMM (La rich misch metal). The alloys presented typical bimodal grain structure consisted of large elongated un-DRXed grains and fine recrystallized grains when extruded at relatively low temperature. The alloy showed excellent balance of strength and elongation. The distinct grain structure generated in this study allowed the influence of un-DRXed grains on yield strength
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Li, Jian Ping, Li Bang Zeng, Da Heng Mao, and Hong Feng Jiang. "Experimental Research on Ultrasound Cast-Rolling Lead Alloy Strip." Advanced Materials Research 366 (October 2011): 181–86. http://dx.doi.org/10.4028/www.scientific.net/amr.366.181.

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With the ultrasound was put into the experiment of cast-rolling lead alloy strip, it broke the dendrite structures and enhanced the under-cooling by the effect of cavity and acoustic streaming. The microstructure comparison of ultrasound and general cast-rolling shows that: The grain size of general cast-rolled lead strip is big; the grain boundary is coarse and the organization structure is uneven. However, the grain structure is refined, smaller grains and uniform organization structure is acquired with ultrasound treatment. Besides, the mechanical properties test results of the two kinds le
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Pasang, Timotius, V. Satanin, M. Ramezani, M. Waseem, Thomas Neitzert, and O. Kamiya. "Formability of Magnesium Alloys AZ80 and ZE10." Key Engineering Materials 622-623 (September 2014): 284–91. http://dx.doi.org/10.4028/www.scientific.net/kem.622-623.284.

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Formability of two magnesium alloys, namely, AZ80 and ZE10, has been investigated. Both alloys were supplied with a thickness of 0.8 mm. The grain structure of the as-received AZ80 alloy showed dislocations, twins and second-phase particles and-/or precipitates distributed uniformly within grains. These were not obvious on the ZE10 alloy. The investigations were carried out at room temperature for both alloys in the as-received and heat treated conditions (410oC for 1 hour followed by water quench). The heat treatment significantly changed the grain structure of the AZ80 alloy, but did not aff
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Tang, Haochun, Tso-Fu Mark Chang, Yaw-Wang Chai, et al. "Nanoscale Hierarchical Structure of Twins in Nanograins Embedded with Twins and the Strengthening Effect." Metals 9, no. 9 (2019): 987. http://dx.doi.org/10.3390/met9090987.

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Hierarchical structures of 20 nm grains embedded with twins are realized in electrodeposited Au–Cu alloys. The electrodeposition method allows refinement of the average grain size to 20 nm order, and the alloying stabilizes the nanoscale grain structure. Au–Cu alloys are face-centered cubic (FCC) metals with low stacking fault energy that favors formation of growth twins. Due to the hierarchical structure, the Hall–Petch relationship is still observed when the crystalline size (average twin space) is refined to sub 10 nm region. The yield strength reaches 1.50 GPa in an electrodeposited Au–Cu
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Son, Hyeon Taek, Jae Seol Lee, Young Kyun Kim, Ik Hyun Oh, Kyosuke Yoshimi, and Kouichi Maruyama. "Effects of Samarium on Microstructure and Mechanical Properties of Mg-Al-Ca Alloys." Materials Science Forum 544-545 (May 2007): 295–98. http://dx.doi.org/10.4028/www.scientific.net/msf.544-545.295.

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As samarium addition was increased, α- Mg matrix morphology was changed from dendritic to equiaxed grains and average value of grain size was decreased from 101.6㎛ to 39.3㎛. Samarium addition to Mg-5Al-3Ca based alloys resulted in the formation of Mg-Al-Sm thernary intermetallic compounds at grain boundarys and α-Mg matrix grains. In these alloys, two kinds of eutectic structure were observed; coarse irregular-shape structure at grain boundary and fine needle-shape structure in the α-Mg matrix grain. It is found that the yield strength and ultimate strength showed the maximum value of 109.1MPa
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Ko, Jun Yeong, and Sun Ig Hong. "Effect of Carbon Addition on the Cast and Rolled Microstructures of FeCoCrNiMn High Entropy Alloys." Key Engineering Materials 737 (June 2017): 16–20. http://dx.doi.org/10.4028/www.scientific.net/kem.737.16.

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In this study, the effect of carbon addition the cast and rolled microstructures of Cantor alloy type FeCoCrNiMn high entropy alloys. Both as-cast FeCoCrNiMn and FeCoCrNiMnC0.1 alloys have dendritic microstructure. Small particles, which may be associated carbon addition exist in the dendrite arms in FeCoCrNiMnC0.1 alloy. After homogenization treatment at 1327K for 24 hrs., dendritic structure was completely eliminated after annealing. Dendritic structure was converted to the structure with elongated grains, especially for carbon added FeCoCrNiMnC0.1. The development of elongated grains is ass
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Dissertations / Theses on the topic "Alloy grain structure"

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Flood, S. C. "Factors affecting the grain structure during solidification." Thesis, University of Oxford, 1985. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.355749.

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Bommareddy, Aravinda Reddy Materials Science &amp Engineering Faculty of Science UNSW. "Thermal stability of submicron grain structure in an Al-Sc alloy." Publisher:University of New South Wales. Materials Science & Engineering, 2008. http://handle.unsw.edu.au/1959.4/41492.

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Severe plastic deformation (SPD) has been used over the past few decades for producing submicron grain (SMG) structures in range of metals and alloys. Equal channel angular pressing (ECAP) is a useful process for producing these types of structures whereby the material is deformed to very high plastic strains by passing a billet several times through the ECAP die. This process has an added advantage maintaining the initial dimensions of the billet. SMG materials produced by ECAP and related routes are useful as they usually exhibit excellent properties including high strength and hardness, and
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Knowlton, Brett D. (Brett Douglas). "The effects of grain structure and Cu distribution on the relability of near-bamboo Al-Cu alloy interconnects." Thesis, Massachusetts Institute of Technology, 1997. http://hdl.handle.net/1721.1/10379.

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Williams, Cory R. "The Effects of Scandium and Zirconium Additions on Aluminum Mechanical Properties, Post-Braze Grain Structure, and Extrusion." Ohio University / OhioLINK, 2012. http://rave.ohiolink.edu/etdc/view?acc_num=ohiou1331521298.

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Hlavnička, Radek. "Únavové vlastnosti ultrajemnozrnných Mg slitin." Master's thesis, Vysoké učení technické v Brně. Fakulta strojního inženýrství, 2014. http://www.nusl.cz/ntk/nusl-231379.

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This thesis deals with the influence of grain refinement by ECAP on fatigue properties of magnesium alloy AZ 91. Tensile and fatigue tests were made on the as-cast state samples and samples after ECAP process. Metallographic analysis of the microstructure and fractographic analysis of the fracture surfaces was performed.
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Dorban, Andrew Michael. "Superplasticity of Quasi single phase alloys : the influence of grain structure." Thesis, Imperial College London, 2009. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.498228.

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Kerans, Ronald James. "Structure of grain boundaries and aspects of deformation behavior in Ni?Al alloys /." The Ohio State University, 1988. http://rave.ohiolink.edu/etdc/view?acc_num=osu1487592050230755.

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Laukli, Hans Ivar. "High Pressure Die Casting of Aluminium and Magnesium Alloys : Grain Structure and Segregation Characteristics." Doctoral thesis, Norwegian University of Science and Technology, Department of Materials Technology, 2004. http://urn.kb.se/resolve?urn=urn:nbn:no:ntnu:diva-379.

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<p>Cold chamber high pressure die casting, (HPDC), is an important commercial process for the production of complex near net shape aluminium and magnesium alloy castings. The work presented in the thesis was aimed at investigating the microstructure formation in this type of casting. The solidification characteristics related to the process and the alloys control the formation of grains and defects. This again has a significant impact on the mechanical properties of the castings.</p><p>The investigations were carried out mainly using the AM60 magnesium alloy and the A356 aluminium alloy. Two d
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Mirabelli, Thomas G. "The effect of gravity on the evolution of pore and grain structure during liquid-phase sintering." Thesis, Georgia Institute of Technology, 1999. http://hdl.handle.net/1853/20021.

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Li, Shimin. "Hot Tearing in Cast Aluminum Alloys: Measures and Effects of Process Variables." Digital WPI, 2010. https://digitalcommons.wpi.edu/etd-dissertations/203.

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Hot tearing is a common and severe defect encountered in alloy castings and perhaps the pivotal issue defining an alloy's castability. Once it occurs, the casting has to be repaired or scraped, resulting in significant loss. Over the years many theories and models have been proposed and accordingly many tests have been developed. Unfortunately many of the tests that have been proposed are qualitative in nature; meanwhile, many of the prediction models are not satisfactory as they lack quantitative information, data and knowledge base. The need exists for a reliable and robust quantitative tes
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Books on the topic "Alloy grain structure"

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Gayda, John. Burst testing of a superalloy disk with a dual grain structure. National Aeronautics and Space Administration, Glenn Research Center, 2002.

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Ortiz, Ramiro O. Biaxial creep behavior of an aluminum alloy with oriented grain structure. 1987.

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Pete, Kantzos, and NASA Glenn Research Center, eds. Burst testing of a superalloy disk with a dual grain structure. National Aeronautics and Space Administration, Glenn Research Center, 2002.

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Book chapters on the topic "Alloy grain structure"

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Hao, Hai, Xiaoteng Liu, Yingde Song, and Xingguo Zhang. "Coupled Macro-Micro Modeling for Prediction of Grain Structure of Mg-Al Alloy." In Proceedings of the 8th Pacific Rim International Congress on Advanced Materials and Processing. Springer International Publishing, 2013. http://dx.doi.org/10.1007/978-3-319-48764-9_337.

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Hao, Hai, Xiaoteng Liu, Yingde Song, and Xingguo Zhang. "Coupled Macro-Micro Modeling for Prediction of Grain Structure of Mg-Al Alloy." In PRICM. John Wiley & Sons, Inc., 2013. http://dx.doi.org/10.1002/9781118792148.ch337.

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Shon, In Jin, Seok Jae Lee, Young Seob Seo, Young Kook Lee, Yong Hwan Jeong, and Chong Sool Choi. "Effect of Initial Structure on Recrystallized Austenite Grain Size of Fe-32%Ni Alloy." In Materials Science Forum. Trans Tech Publications Ltd., 2005. http://dx.doi.org/10.4028/0-87849-960-1.175.

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Amanov, Auezhan, Young-Sik Pyun, Wang Qingyuan, and Muhammad Kashif Khan. "Fine Grain Structure as Palliatives for Fretting Wear of Inconel 718 Alloy at Various Temperatures." In 8th International Symposium on Superalloy 718 and Derivatives. John Wiley & Sons, Inc., 2014. http://dx.doi.org/10.1002/9781119016854.ch43.

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Jena, Pradipta Kumar, K. Siva Kumar, R. K. Mandal, and A. K. Singh. "Effect of Directional Grain Structure on Microstructure, Mechanical and Ballistic Properties of an AA-7017 Aluminium Alloy Plate." In Advances in Lightweight Materials and Structures. Springer Singapore, 2020. http://dx.doi.org/10.1007/978-981-15-7827-4_41.

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Li, Weibo, and Osamu Umezawa. "Effects of A Grain Structure on Cyclic Deformation of Ti-Fe-O Alloy at Low Temperature." In Proceedings of the 13th World Conference on Titanium. John Wiley & Sons, Inc., 2016. http://dx.doi.org/10.1002/9781119296126.ch144.

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Lim, S. M., Mohamed El Wahabi, C. Desrayaud, and Frank Montheillet. "The Refinement of Grain Structure in a High-Purity α-Iron Base Alloy under Multiaxial Compression." In THERMEC 2006 Supplement. Trans Tech Publications Ltd., 2006. http://dx.doi.org/10.4028/0-87849-429-4.900.

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Shanmugasundaram, Prasad P., Narayani Narasimhan, and Balasivanadha Prabhu. "Processing and Characterization of Ultra-Fine Grain Structure in Al Alloy by Equal Channel Angular Pressing." In EPD Congress 2011. John Wiley & Sons, Inc., 2012. http://dx.doi.org/10.1002/9781118495285.ch22.

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Yang, Muxin, Dingshun Yan, Fuping Yuan, Ping Jiang, Evan Ma, and Xiaolei Wu. "Dynamically Reinforced Heterogeneous Grain Structure Prolongs Ductility in a Medium-Entropy Alloy with Gigapascal Yield Strength." In Heterostructured Materials. Jenny Stanford Publishing, 2021. http://dx.doi.org/10.1201/9781003153078-36.

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Galiyev, A., R. Kaibyshev, and M. Almakaev. "Development of New Grain Structure and Tensile Properties Improving in a Hot Pressed and ECAP Processed ZK60 Magnesium Alloy." In Magnesium. Wiley-VCH Verlag GmbH & Co. KGaA, 2005. http://dx.doi.org/10.1002/3527603565.ch31.

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Conference papers on the topic "Alloy grain structure"

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McCracken, Steven L., X. Yu, Y. C. Lim, D. F. Farson, and S. S. Babu. "Grain Structure Refinement in Nickel Alloy Welds by Magnetic Arc Stirring." In ASME 2011 Pressure Vessels and Piping Conference. ASMEDC, 2011. http://dx.doi.org/10.1115/pvp2011-57681.

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Nickel alloys with high chromium content provide optimum resistant to stress corrosion cracking for service in the reactor coolant system of commercial nuclear power plants. High chromium nickel-base alloys however present many challenges, such as less than ideal weldability and susceptibility to solidification cracking or solid-state cracking depending on welding conditions and dilution effects with dissimilar metals. Moreover, the presence of large solidification grains, typical of nickel alloy weld metals, makes ultrasonic examination of the weldment difficult. Magnetic stirring of the nick
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Chang, D. A., R. Nasser-Rafi, and S. L. Robertson. "Mechanical Properties of Controlled Grain Structure (CGS) Alloy 718." In Superalloys. TMS, 1991. http://dx.doi.org/10.7449/1991/superalloys_1991_271_286.

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Zaikina, A. A., O. V. Sizova, and O. S. Novitskaya. "Comparative analysis of the friction stir welded aluminum-magnesium alloy joint grain structure." In ADVANCED MATERIALS WITH HIERARCHICAL STRUCTURE FOR NEW TECHNOLOGIES AND RELIABLE STRUCTURES. AIP Publishing LLC, 2015. http://dx.doi.org/10.1063/1.4932927.

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Zolnikov, K. P., A. V. Korchuganov, and D. S. Kryzhevich. "Grain boundary effect on radiation damage in Fe–Cr alloy." In PROCEEDINGS OF THE INTERNATIONAL CONFERENCE ON ADVANCED MATERIALS WITH HIERARCHICAL STRUCTURE FOR NEW TECHNOLOGIES AND RELIABLE STRUCTURES 2017 (AMHS’17). Author(s), 2017. http://dx.doi.org/10.1063/1.5013920.

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McLeod, Logan S., Levent F. Degertekin, and Andrei G. Fedorov. "Grain Boundary Diffusion of Hydrogen in Nano-Structured Pd/Ag Alloy Membranes." In ASME 2008 3rd Energy Nanotechnology International Conference collocated with the Heat Transfer, Fluids Engineering, and Energy Sustainability Conferences. ASMEDC, 2008. http://dx.doi.org/10.1115/enic2008-53014.

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Palladium and its alloys have long been used as hydrogen separation membranes due to their extremely high permeability and selectivity to hydrogen over all other gases [1]. The hydrogen permeation process begins with selective chemisorption of the gas onto the metal surface. As the adsorption process is the point in the permeation sequence where the majority of gases become excluded, it follows that a cleverly designed device could be created to take advantage of the so-called ‘fast’ diffusion paths of surface and grain-boundary diffusion to further enhance permeability without sacrificing sel
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Kalashnikov, K. N., T. A. Kalashnikova, A. V. Chumaevskii, et al. "Friction-stir processed ultrafine grain high-strength Al-Mg alloy material." In PROCEEDINGS OF THE INTERNATIONAL CONFERENCE ON ADVANCED MATERIALS WITH HIERARCHICAL STRUCTURE FOR NEW TECHNOLOGIES AND RELIABLE STRUCTURES 2017 (AMHS’17). Author(s), 2017. http://dx.doi.org/10.1063/1.5013756.

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Zhu, Qifang, Yurii Sharkeev, Anna Eroshenko, et al. "Grain characteristics and mechanical properties of bioinert Ti-40 wt. % Nb alloy." In PROCEEDINGS OF THE INTERNATIONAL CONFERENCE ON ADVANCED MATERIALS WITH HIERARCHICAL STRUCTURE FOR NEW TECHNOLOGIES AND RELIABLE STRUCTURES 2019. AIP Publishing, 2019. http://dx.doi.org/10.1063/1.5132268.

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Kikuchi, Ryo, Shujiro Suzuki, and Ken Suzuki. "Molecular Dynamics Analysis of the Acceleration of Intergranular Cracking of Ni-Base Superalloy Caused by Accumulation of Vacancies and Dislocations Around Grain Boundaries." In ASME 2020 International Mechanical Engineering Congress and Exposition. American Society of Mechanical Engineers, 2020. http://dx.doi.org/10.1115/imece2020-23352.

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Abstract Ni-based superalloys with excellent high temperature strength have been used in advanced thermal power plants. It was found that grain boundary cracking is caused in the alloy under creep-fatigue loading due to the degradation of the crystallinity of grain boundaries and the grain boundary cracking degrades the lifetime of the alloy drastically. In order to clarify the mechanism of intergranular cracking, in this research, static and dynamic strains were applied to a bicrystal structure of the alloy perpendicularly to the grain boundary using molecular dynamics analysis. In addition,
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Deng, Rurong, Peng Yun, and Xuemei Huang. "The research on die structure of aluminum alloy bars for preventing the coarse grain." In 5th International Conference on Advanced Design and Manufacturing Engineering. Atlantis Press, 2015. http://dx.doi.org/10.2991/icadme-15.2015.323.

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McGhee, Paul, Sergey Yarmolenko, Devdas Pai, et al. "Effect of Extrusion Processing Parameters on Microstructure of Mg-Zr Alloys." In ASME 2017 International Mechanical Engineering Congress and Exposition. American Society of Mechanical Engineers, 2017. http://dx.doi.org/10.1115/imece2017-70627.

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The micro-alloying effect, mechanical properties, and plastic deformation behavior of extruded Mg-Zr alloy were investigated and characterized as a function of Zr addition, grain size, and texture. The experimental methodology used in this study was design to exploit the hot-extrusion processing parameters (in the terms of extrusion ratios and temperature) and its effect on Mg extruded alloys microstructure, texture, and mechanical properties. Microstructural observations revealed significant grain refinement through a combination of Zr addition and hot-extrusion, producing fine equiaxed grain
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Reports on the topic "Alloy grain structure"

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Baker, I. The structure and properties of grain boundaries in B2 ordered alloys. Office of Scientific and Technical Information (OSTI), 1990. http://dx.doi.org/10.2172/5722753.

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Baker, I. The structure and properties of grain boundaries in B2 ordered alloys: Progress report. Office of Scientific and Technical Information (OSTI), 1989. http://dx.doi.org/10.2172/6227765.

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Baker, I. The structure and properties of grain boundaries in B2 ordered alloys. Progress report. Office of Scientific and Technical Information (OSTI), 1990. http://dx.doi.org/10.2172/10120921.

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Was, G. S. The role of grain boundary chemistry and structure in the environmentally-assisted intergranular cracking of nickel-base alloys. Office of Scientific and Technical Information (OSTI), 1992. http://dx.doi.org/10.2172/7039707.

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Was, G. S. The role of grain boundary chemistry and structure in the environmentally-assisted intergranular cracking of nickel-base alloys. Progress report, [December 1, 1990--November 31, 1993]. Office of Scientific and Technical Information (OSTI), 1993. http://dx.doi.org/10.2172/10104654.

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Was, G. S. The role of grain boundary chemistry and structure in the environmentally-assisted intergranular cracking of nickel-base alloys. Progress report, August 1, 1991--July 31, 1992. Office of Scientific and Technical Information (OSTI), 1992. http://dx.doi.org/10.2172/10187369.

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