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Ni-Cr-Co-W-Mo-Al-Ti alloy preparation and properties of porous materials research


With the increase in the number of generated hole damage, compression curves platform stage. The third stage is mostly generated hole is damaged, a sharp decline in the compressive strength of porous materials. As the loading continued, the majority of generated porous metal hole was compacted into a solid base of porous metal materials, the phenomenon appears to further increase the compressive strength. Alignment of the pore porous materials, high temperature alloy compression stress-strain curve in elastic stage there is obvious stress after the peak,[link widoczny dla zalogowanych], which corresponds to the uniform pores of porous metal directional force of the moment. As the load increases, continuous destruction of the pore, the stress decreased rapidly, and occur within a certain range of stress with the strain of the jagged stress fluctuations, so the alignment of pore porous metal has good compression resistance and energy absorption performance. 3 Conclusions 1) The porosity of spherical porous material with the amount of urea increased. When the pore mass fraction of 40% (of the total material weight) when the received 81.62% of the porosity of porous materials. 2) The size. 6ram × 30ram pore medium tubular pores obtained by the alignment of porous high-temperature alloy materials, the average pore size and the average pore wall was 2.62mm and 0.32mm, hole porosity of 87.7%. 3) spherical compression properties of porous high-temperature alloys with the increase of porosity and pore size decreased,[link widoczny dla zalogowanych], the porosity of the same material, small aperture spherical porous high-temperature alloys high compressive strength and shear modulus. 4) Preparation of porous pore alignment the maximum compressive strength of high-temperature alloy materials for the 40.01MPa, shear modulus 1230MPa, has good compressive strength, shear strength and energy absorption performance. References [1] Yong-Jun Chen, Xiao-Qing Zuo, Shi Qingnan, et al . The development of metal honeycomb, development and applications. Materials Review, 2003,17 (12) :32-35 [2] SimoneAE, GibsonLJ. Eifficientstructuralcomponentsusingporousmeta1. MaterialsScience & EngineeringA: StructuralMaterials: Properties, MicrostructureandProcessing1997, A229 (1-2): 55-62 [3] Liu Peisheng. Introduction of porous materials. Beijing: Tsinghua University Press ,2004,9:6-8l4] NadlerJasonH,[link widoczny dla zalogowanych], SandersJrThomasH, SpeyerRobertF. OxidereductionandsinteringofFe-Cralloyhoneycombs. JournalofMaterialsResearch, 2003,18 ( :1787-1794 [5] ZaitsevAY, WilkinsonDS, WeatherlyGC, eta1. Thepreparationofhighlyporousstructuresfromfilamentarynickelpowders. JournalofPowerSources, 2003,123 (2) :253-260 [6] Xing Yi, Ma Hong autumn, the status of Spring. Fe intermetallic compound of porous materials. Powder Metallurgy Technology , 2005,23 (4): 263 ~ 267 [7] Li Feng, Chen Haiyan, Yuan dove into. Pore parameters of sintered porous alloy analysis. Materials Science and Engineering, 2002,20 (2) :254-258 [8] Fang Yucheng, Wang Hao, Zhou, et al. Powder preparation and application of new porous materials Technology. Metals, 2005,29 (5) :791-796 [9] Chinese Society for Metals, China Nonferrous Metals Society. Physical properties of metallic materials manual (Volume I): physical properties of metals and testing methods. Beijing; Metallurgical Industry Press,[link widoczny dla zalogowanych], 1987:18 ~ 45 [10] Wang Shiyuan, Yong Zhihua, Li Juan, et al. The density of porous material of the test method . Practical testing technology, 2002,5 (9) :16-17 [11] HayesAlethemM, WangAijun, DempseyBenjaminM, eta1. Mechanicsoflinearcellaralloy. MechanicsofMaterials, 2004,36 ( :691-713
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