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at the speed of 1500 r/min and working pressure of 31.5 MPa. The external retainer plate is made of 42CrMo alloy steel, while the external spherical hinge is made of steel 45 and plated with brass on its inner......
层的强度极限时,铝层开始颈缩并产生裂纹,同时界面裂纹沿拉伸方向迅速扩展,随后IF钢单独伸长变形直至断裂.王传杰等[12]研究了Cu/Ni复合箔的界面变形行为,基体层间的力学性能差异导致Cu/Ni界面的微孔缺陷处最先萌生裂纹,当界面裂纹大量合并和纵向扩展时,基体层开始发生颈缩和断裂.皇涛等[13]通过扫描电镜表征研究了钛/铝复合板原位拉伸加载过程的损伤演化行为,裂纹在复合界面区的金属间化合物层中萌生... Fang-fang, et al. Interactive effects of microstructure and interface on tensile deformation behaviors of Cu/Ni clad foils[J]. Materials Science and Engineering A, 2018, 714: 14-24. [13] 皇 涛, 王 锟, 陈拂晓......
孔洞缺陷则会导致更高的材料屈服应变,但是,该研究没有考虑裂纹和空洞的耦合作用对损伤的影响.JIANG等[9]从微观角度研究了孔洞密度对镍单晶孔洞变形的位错机理影响,结果表明增加孔洞密度可以促进镍单晶的屈服.LIANG等[10]研究了镍基单晶Ni,Ni3Al,Ni/Ni3Al界面孔洞在拉伸作用下的变形机理和孔洞的尺寸效应影响,结果发现在Ni和Ni3Al模型中,a/6[112]肖克莱不全位错首先在孔洞...-exposed turbine blade[J]. Metallography, Microstructure, and Analysis, 2016, 5(4): 321-326. [3] JHA S K, CATON M J, LARSEN J M. The mean vs life-limiting fatigue response of a Ni base superalloy......
J. Cent. South Univ. (2020) 27: 629-673 DOI: https://doi.org/10.1007/s11771-020-4322-1 Decision making tools for optimal material selection: A review Divya ZINDANI, Saikat Ranjan MAITY, Sumit BHOWMIK Department of Mechanical Engineering, National Institute of Technology Silchar, Silchar,Assam-7880......
for aqueous gelcasting alloy Ni-362-3 STAMPFL等[65]将MoldSDM(Mold shape deposition manufacturing)模具制造工艺与凝胶注模成型技术相结合,在快速分层制备的腊模内通过浇注高固相体积分数的金属粉末料浆,成功制备出形状复杂的不锈钢叶轮,烧结后该叶轮的微观结构及力学性能优良,可与传统粉末冶金工艺制件媲美.图......
改进型铝化物涂层,如Al-Cr,Al-Si,Al-Ti,Pt-Al,其中以镀Pt渗Al形成的铂铝化物涂层具有更长的使用寿命而倍受欢迎,进而成为研究的热点,至今仍有相关报道. 以上两代涂层均属于扩散涂层, 这些涂层在航空发动机上得到了一定的应用[4-5] . 第3代涂层,20世纪80年代发展了可以调整涂层成分,能在更高温度下起到高温抗氧化作用的等离子体喷涂MCrAlY涂层(M代表Fe,Co,Ni...对于热障涂层的使用寿命非常重要.合金组元中Ni,Co或Ni+Co是涂层的基体元素, Co的抗热腐蚀性能优于Ni, 但抗氧化性能不如Ni, Ni+Co的组合有利于涂层的综合抗腐蚀(氧化)性能；并且Co质量百分比在20%~26%时, Ni+Co组合的涂层具有最佳的韧性.组元中Cr是用于保证涂层的抗热腐蚀 性,Al是用于提供涂层的抗氧化性.在Ni基高温合金中, Cr和Al都是固溶强化元素, Al还是γ......
, 27(2): 282-288. SHEN Ding, YANG Shao-bin, LI Si-nan, SUN Wen, TANG Shu-wei. Calculation and prediction of lithium insertion properties and elastic properties for Sn-Li alloy based on first-principle......
presented in Ref. [52] consists of a wrapped screen mesh, made of single-plaited stainless steel. Stainless steel is a steel alloy composed of iron and different proportions of chromium, which is responsible......
to the excessive consumption of the outer Cr-Al-Si alloy coating and there are also some defects appearing in the SiO2 glass layer. SHI et al [67] prepared a La-Mo-Si-O-C coating on the surface of porous SiC pre... occurring in the thermal shocking tests. The dual- layer SiC coating can effectively improve the oxidation resistant property of MG sphere at the temperature up to 1773 K for 200 h and could understand more......
testing procedure. In addition, it is environmentally significant to carry out this research as the silica fume is the waste from the metal and alloy production industry, while nano- silica can......
