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Cr8Mo2SiV钢二次硬化机理的研究迟宏宵1,2,马党参2,王昌2,陈再枝2,雍岐龙-2(1.云南省昆明市昆明理工大学材料科学与工程学院2.北京市钢铁研究总院结构材料研究所)摘 要:采用硬度计SEM,EDS,TEM和XRD研究了经深冷处理和未经深冷处理Cr8Mo2SiV钢的回火硬度,残余奥氏体含量和碳化物析出行为.结果表明,Cr8Mo2SiV钢经1030℃淬火后,二次硬化峰值硬度出现在回火温度为520℃.深冷处理能够显著减少残余奥氏体含量,进而提高二次硬化峰温度之前的回火硬度,并使二次硬化峰向低温区移动20℃......
Influence of secondary carbide precipitation and transformation on abrasion resistance of a 3Cr15Mo1V1.5 white ironHaohuai Liu1,2), Jun Wang2), Baoluo Shen2), Hongshan Yang2), Shengji Gao2..., Chengdu 610064, China 3) Sijiu Rare Earth Alloy Foundry, Shuangliu 610211, China摘 要:The relationship between the secondary carbide precipitation......
连续退火工艺对超低碳烘烤硬化钢烘烤硬化性能的影响崔岩1,2,王瑞珍2,魏星3,雍岐龙0(1.云南省昆明市昆明理工大学材料与冶金工程学院2.北京市钢铁研究总院结构材料研究所3.武汉钢铁(集团)公司 研究院,湖北武汉 430080)摘 要:应用连续退火模拟机研究了连续退火工艺各个参数对超低碳烘烤硬化钢板烘烤硬化性能的影响.试验结果表明:提高退火温度可增加NbC的回溶量,而且晶粒尺寸增大使碳原子的晶界偏聚量减少,从而提高了钢板的烘烤硬化性能;提高缓冷段冷速能减少NbC析出,有利于烘烤硬化性能的提高;快冷段冷速和过时效......
, GAO N. Precipitation hardening in Al-Cu-Mg alloys revisited[J]. Scripta Materialia, 2006, 54: 287-291. [16] FONTECCHIO M. Quench probe and quench factor analysis of aluminum alloys in distilled water[D... aluminum alloy was investigated by means of Jominy end quench test. The effects of cooling rate on ageing precipitation and strengthening behavior were analyzed by temperature data acquisition, Brinell......
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temperatures due to the solution hardening and precipitation hardening [3-6]. The magnesium-based alloys containing RE elements are characterized by high strength, which is determined by the possibility... group (La-Eu), and the Y group (Y and Gd-Lu). The use of rare earths enables both solid solution hardening and precipitation hardening, and the intermetallic compounds exhibit little diffusivity......
J. Cent. South Univ. Technol. (2008) 15: 622-626 DOI: 10.1007/s11771-008-0116-6 Effect of tetracarbon additives on gibbsite precipitation from seeded sodium aluminate liquor ZENG Ji-shu(曾纪术... and tetrahydrofurane on gibbsite precipitation from caustic seeded sodium aluminate liquor were investigated. The additive was charged into supersaturated seeded sodium aluminate liquor, then the precipitation ratio......
hardening effect of the new alloy strengthens with the increase of solution treatment temperature. These aging characteristics are attributed to the relatively lower concentration of beta stabilizer in the new alloy.
Key words: titanium alloy; aging; microstructure; tensile properties; precipitation
to the precipitation hardening during heat treatment.
Several investigations were carried out on the influence of heat treatment on the mechanical properties of Al alloys[4-9]. In addition, some research...
Effect of second phase precipitation behavior on
mechanical properties of casting Al-Cu alloys
ZHAO Wen-gui(赵文贵), JIANG Qi-chuan(姜启川), WANG Jin-guo(王金国),
LI Yong(李永), HOU Jing-qi(侯景琦)
Key......Effect of second phase precipitation behavior onmechanical properties of casting Al-Cu alloys
来源： 《中国有色金属学报(英文版)2007年增刊第1期》——赵文贵 姜启川 王金国 李永 侯景琦
Preparation and Characterization of Nanocrystalline CeO2 by Precipitation Method 张伟1,李明1,董相廷1,洪广言2,刘桂霞1 (1.Faculty of Applied Sciences, Changchun Institute of Optics and Fine Mechanics, Changchun... by precipitation method using ethanol as dispersive and protective reagent. XRD spectra show that the synthesized CeO2 has cubic crystalline structure of space group O5H-FM3M, when calcination temperature......
