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], the precipitation hardening effect of β phase in Mg-Al based alloys is small compared with other alloys such as aluminum alloys. This is because of the unfavourable orientation of β phase plates... on properties of AZ80 Mg alloy As can be seen in Fig.1, the GP and continuous phase are the only precipitates in AZ80 Mg alloy aged at 583 K, so the precipitation hardening effects of GP and continuous β......
on the high-temperature strength of Al-Cu-Mg alloys with high Cu-to-Mg molar ratios (e.g. 10?1)[3-4]. The addition of Ag not only enhances the hardening response but also totally changes the precipitation... Effect of Yb addition on precipitation and microstructure of Al-Cu-Mg-Ag alloys XIAO Dai-hong(肖代红)1, 2, HUANG Bai-yun(黄伯云)2 1. State Key Laboratory of Powder Metallurgy, Central South University......
Cooling Curve''s Effect on Hardening Behavior of Steel Shigeru Asada1,Kazuto Fukuhara1,Syusaku Maeda1,Yoshihiro Tomita1 (1.Nippon Grease Co., Ltd. Osaka, Japan) 摘要:Quenching Oils are comprised... curve(1), it is possible to provide higher quench hardening performance using quenching oil formulated of adequate additives. 关键词:Quenching Oil; Cooling performance; Additive; Hardening performance......
Age hardening characteristics and mechanical properties of Mg-3.5Dy-4.0Gd-3.1Nd-0.4Zr alloy LI De-hui(李德辉)1, DONG Jie(董 杰)1, ZENG Xiao-qin(曾小勤)1, LU Chen(卢 晨)1, DING Wen-jiang(丁文江)1 National Engineering Research Center for Light Alloy Net Forming, Shanghai Jiao Tong University, Shanghai 200030, China Received 28 July 2006; accepted 15 September 2006 Abstract: Age hardening characteristic......
easily and leads to the precipitation hardening effect[7]. Meanwhile, the existence of these precipitates may inevitably exert great influence on the recrystallization process[8-9]. Fig.5 shows... Effects of secondary precipitation on recrystallization in Co-base superalloy DZ40M ZHAO Yang(赵 阳), WANG Lei(王 磊), YU Teng(于 腾), SONG Xiu(宋 秀) Key Laboratory for Anisotropy and Texture......
properties. Among the more important of these treatments are heat treatment processes such as hardening by Quenching, Induction hardening and Case Carburizing which rely on phase transformations to produce... transformations (Machining) of low carbon steels. 关键词:Normalizing; Turn hardening; grind hardening; quality; specific energy; energy partition ratio; [全文内容正在添加中] ......
CSP生产的钒氮微合金钢的组织细化和析出物研究霍向东1,毛新平2,郑晓伟1,林振源1,王志远1(1.江苏省镇江市江苏大学材料科学与工程学院2.广州钢铁企业集团CSP应用技术研究所,广东广州 510730)摘 要:紧凑式带钢工艺(CSP)生产的钒氮微合金钢屈服强度超过600 MPa,韧性良好.采用扫描电镜和透射电镜观察发现,铁素体平均晶粒直径在3μm左右,在铁素体晶粒内部分布着数十纳米和几纳米的两类V(C,N)析出物.细晶强化是主要的强化方式,在铁素体中析出的V(C,N)粒子起到了沉淀强化作用.分析了超细晶组织形......
temperature precipitation-hardening effect and inhibit-recrystallization ability of Al-Cr-Yb, Al-Zr-Cr, Al-Zr-Yb and Al-Zr-Yb-Cr increase. The aluminum alloy with simultaneous addition of trace amount element Zr, Yb and Cr has the optimum high temperature precipitation-hardening effect and inhibit-recrystallization ability, which is related to the excellent high temperature stability, small particle......
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Precipitation of Icosahedral Quasicrystalline Phase, R-phase and Laves Phase in Ferritic Alloys Yoshisato Kimura1,Keisuke Yamamoto1,Yoshinao Mishima1 (1.Department of Materials Science and Engineering, Tokyo Institute of Technology, Yokohama, Japan) 摘要:Ferritic heat resistant steels involving precipitation of intermetallic phases have drawn a growing interest for the enhancement of creep......
