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Effects of Nb Alloying on Nano-Crystallization Kinetics of Fe55-xCr18Mo7B16C4Nbx(x=0, 3) Bulk Amorphous AlloysS. Ahmadi,H.R. Shahverdi,S.S. SaremiFaculty of Engineering, Department of Materials Science, Tarbiat Modares University摘 要:Crystallization kinetics of Fe55-xCr18Mo7B16C4Nbx(x= 0, 3) bulk amorphous alloys were analyzed using X-ray diffraction......
, Chinese Academy of Sciences, University of Science and Technology of China, Hefei 230026, China Received 10 April 2006; accepted 25 April 2006 Abstract: The deformation-induced nano-crystallization behavior of amorphous pure Ni was investigated by using a molecular dynamics simulation. The microevolution mechanism of the nano-crystallization, the crystallization process in the multicomponent......
Trans. Nonferrous Met. Soc. China 29(2019) 358-364 Non-isothermal nano-crystallization kinetics in amorphous Ni55Nb35Si10 alloy H. MINOUEI1, G. H. AKBARI1, M. H. ENAYATI2, S. I. HONG3 1. Department..., which led to the formation of nano-intermetallic crystals in amorphous matrix. The apparent activation energy for the crystallization of the alloy, determined by the Kissinger equation......
: electroless Ni-W-P coating; laser-treatment; annealing; nano-crystallization; corrosion 1 Introduction Nanocrystalline materials, as a result of reduction of the grain sizes, with high volume...], electrodeposition[5-6], severe plastic deformation[7] and crystallization of amorphous solids[2]. For nanocrystallization of amorphous solids, such as amorphous electroless-plated Ni-P base alloys and amorphous......
STUDY ON THE SHOCK WAVE CRYSTALLIZATION OF AMORPHOUS ALLOYS BY DSC H.Wang1,Z.Q.Liu1,Q.J.Liu1,H.Y.Zhao1,J.D.Kan1 (1.Department of Materials Science and Engineering, Yunnan University, Kunming 650091, China) Abstract:Shock wave and annealing crystallization of amorphous alloys FeSiB, FeMoSiB andFeCuNbSiB were studied by isothermal and non-isothermal DSC technique. It wasfound that the shock wave......
of a Conform-extruded Cu-0.4%Mg (mass fraction) alloy after surface nano-crystallization (SNC) via a high-speed rotating wire-brushing were evaluated to develop the high-strength and high conductivity anti... 400 nm, presenting typical nano-crystalline characteristic. The SNC-treated alloy presents the typical corrosion period of active, passive and transpassive in NaOH solution. SNC improves the corrosion......
component. However, there were few reports on the effects of the surface conditions on the pack aluminizing. Surface micro- or nano-crystallization was reported to promote the atomic diffusion and chemical... gas (NH4) at a relatively low temperature (300 ℃) for 9 h, due to the surface nano-crystallization enhancing the atomic diffusion rate along grain boundaries. Surface micro- or nano- crystallization......
and Technology, 2009, 40(3): 644-649. [16] 胡国雄. 金属材料表面自纳米化工艺,表征及机理研究[D]. 重庆: 重庆大学材料学院, 2007: 63-64. HU Guoxiong. Investigation of processing, characterization and mechanism of surface self nano-crystallization in metallic materials[D]. Chongqing: Chongqing University. College of Materials Science and Engineering, 2007: 63-64. [17] 刘忠良. 0Cr18Ni9钢超音速微粒轰击(SFPB)表面纳米化机理与性能研究[D]. 西安: 西安理工大学材料科学与工程学院......
;高温环境下氧原子在钛合金基体固溶度高. REFERENCES [1] 郭周强, 葛利玲, 袁 航, 等. 钛合金TC4表面纳米化及其热稳定性[J]. 材料热处理学报, 2012, 33(3): 116-120. GUO Zhou-qiang, GE Li-ling, YUAN Hang, et al. Surface nano-crystallization of TC4 titanium......
the diffraction lines broaden as well. 3.2 Nano-crystallization of 90W-4Ni-2Fe-3.8Mo-0.2RE prealloy powders in process of MA Crystallite size determination is one of the most important applications in powder... Fabrication of nano-crystalline W-Ni-Fe pre-alloyed powders by mechanical alloying technique YAN Jian-wu(晏建武)1, 2, 3, LIU Ying(刘 莹)3, PENG A-fang(彭阿芳)1, LU Quan-guo(卢全国)1 1. Institute......