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, and the structure of the treated samples was examined using Mssbauer spectroscopy, XRD and TEM. Experimental results showed that nanocrystallization occurs in the amorphous Fe 73.5 Cu 1Nb 3Si 13.5 B... atoms in the residual amorphous remains the in plane anisotropy, in spite of bulk nanocrystallization. In contrast with the result by comparable isothermal annealing, it was concluded......
Hydriding and microstructure nanocrystallization of ZK60 Mg alloy by reaction milling in hydrogen YUAN Yuan(袁 媛), WANG Heng(王 珩), HU Lian-xi(胡连喜), SUN Hong-fei(孙宏飞), FANG Wen-bin(房文斌... is 2-3 μm. Key words: Mg alloy; reaction milling; hydriding; microstructure nanocrystallization ......
非晶态及部分晶化态Al-Ni-Y合金的磁性龚静1,杨红旺1,杨柏俊2,王瑞春1,李荣德2,王建强0(1.辽宁省沈阳市沈阳工业大学材料科学与工程学院2.中国科学院 金属研究所 沈阳材料科学国家(联合)实验室)摘 要:采用熔体急冷法制备了Al90Ni2Y8和Al84Ni8Y8合金条带,并用XRD进行了结构表征,用差示扫描量热仪分析了合金的热稳定性,使用超导量子干涉仪对Al90Ni2Y8和Al84Ni8Y8非晶态及部分晶化态合金的磁性进行了研究.结果表明,Al90Ni2Y8和Al84Ni8Y8非晶合金为抗磁性,而且随......
with rotation of grains in local region. Key words: burnishing; pure copper; gradient nano/micro-structure; surface nanocrystallization 1 Introduction Owing to the extraordinary mechanical and physical properties of surface nanocrystallization (SNC) materials [1,2], numerous SNC techniques have been proposed. Among these techniques, surface self-nanocrystallization (SSNC) techniques gradually attract......
is produced at intersection of twins. Key words: high energy shot peening; 0Cr18Ni9Ti stainless steel; martensite; nanocrystallization ...] LU Ke. Nanocrystalline materials crystallized from amorphous solids: Nanocrystallization, structure, and properties[J]. Materials Science & Engineering R: Reports, 1996, 16(4): 161-221. [3......
protection, which provides the possibility for application of industrialized production. Key words: electroless plating; Ni-P/Ni-W-P duplex coating; laser treatment; adhesive wear; nanocrystallization 1......
剪切变形方式下低碳钢表面纳米结构的形成刘刚1,莫成刚1,武保林2,左良1(1.辽宁省沈阳市东北大学研究院2.沈阳航空航天大学 材料工程系,辽宁沈阳 110136)摘 要:对低碳钢板材进行表面球磨处理,利用电子显微术研究剪切变形方式下深度方向的组织演变.结果表明,低碳钢的纳米化过程包括:位错通过增殖,运动,湮灭和重组形成位错墙;位错墙逐渐转变成小角度和大角度晶界,将原始粗晶分割成亚微晶;亚微晶内重复上述过程使晶粒继续细化,最终形成等轴状,取向接近随机分布的纳米晶组织.外力作用方向并未改变纳米化过程,但会影响变形层......
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Effect of surface nanocrystallization and PPEC time on complex nanocrystalline hard layer fabricated by plasma electrolysis M. ALIOFKHAZRAEI1, SH. AHANGARANI2, A. SABOUR ROUHAGHDAM1 1. Department... nanocrystallization (by surface severe plastic deformation) and plasma electrolytic carburizing on CP-Ti was investigated. Skewness and kurtosis of Gussian shape distribution curves were studied and the effect......
