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; 文献标志码:A Effects of prestretching on precipitated phase and mechanical properties of Al-Cu-Mg-Ag alloy LI Zhou-bing, SHEN Jian, LEI Wen-ping, YAN Liang-ming, LI Jun-peng, MAO Bai... during 4% prestretching emerges before aging is 18 h and the corresponding tensile strength is 508 MPa. Key words: Al-Cu-Mg-Ag alloy; prestretching; precipitated phase; mechanical properties 作为航空工业主要用......
文献标志码:A Influence of precipitated phase on hardness of Ti-10Cr alloy FENG Liang, GE Peng, YANG Yi, ZHOU Wei (Titanium Alloy Research Center, Northwester Institute... ℃. The precipitated phases and their morphologies during solution and aging were analyzed by XRD and TEM. Furthermore, the relationships among hardness, phase precipitation and heat treatment were discussed......
, the formation of α2 phase plays a main role. For TC11 titanium alloy, the main decrease stage of plasticity results from the coarsening of α2 phase during thermal exposure process. Key words: TC11 titanium alloy; thermal exposure; tensile property; precipitated phase 基金项目:总装备部预研基金资助项目(51312010311) 收稿日期:2012-04-14；修订日期:2012-09-12 通信作者:夏长清,教授；电话:0731-88830267；E-mail: xia-gro@mail.csu.edu.cn 钛及钛合金因为密度低......
and precipitated phase on grain refinement of Al-4Cu alloy by severe plastic deformation ZHAO Feng-xiao1, XU Xiao-chang1, 2, ZHANG Qi1, XU Hao-hao1, LIU Hai-quan1, ZENG Hui-ying1 (1. School of Materials Science... diffractometry to investigate the effect of solute atom and precipitated phase on grain refinement of Al-4Cu alloy by severe plastic deformation. The results show that the existence of solute atom......
ZrC粒子对低碳微合金钢的强化作用黄忠东1,2,牛建平3,才庆魁1,黄文力4(1.辽宁省沈阳市东北大学材料与冶金学院2.辽宁省抚顺市抚顺职业技术学院化工系3.沈阳大学 机械工程学院,沈阳1100444.中国石油抚顺石化公司,辽宁抚顺 113008)摘 要:真空条件下,在低碳微合金钢中添加微米级ZrC颗粒,使其成为钢在热轧时奥氏体的形变核心及其形变诱导铁素体的再结晶核心以细化晶粒,获得了屈服强度为518 MPa的低碳微合金高强度钢,对钢中第二相粒子包括碳化物析出相及外加ZrC颗粒对钢的强化作用进行了讨论.采用化学......
of AM 表3 增材中相组成的相对含量 Table 3 Relative content of phase in AM 图6 增材中第二相的TEM像 Fig. 6 TEM images of precipitated phase in AM 图6所示为增材中第二相的TEM像.图6(a)所示为基材中的第二相形貌,为棒状,均匀分布于α(Al)基体中...对基材减小,且增材底部中的第二相尺寸相对顶部增大. 上述结果表明,增材中的第二相含量相对基材减少,其形状由棒状转变为椭球状,尺寸减小；且增材底部中的第二相含量相对顶部减少,尺寸增大. 表4 增材中第二相尺寸的变化 Table 4 Changes in size of precipitated phase in AM 2.4 第二相与基体的取向关系 图7所示为增......
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Improving high-temperature mechanical properties of cast CrFeCoNi high-entropy alloy by highly thermostable in-situ precipitated carbidesX.W.Liu1,N.Gao1,J.Zheng2,Y.Wu3,Y.Y.Zhao4,Q.Chen5,W.Zhou2,S.... In consideration of the potential diversified applications, more strengthening approaches except for the previously proposed L12 phase hardening deserve further exploration due to its rapid coarsening......
show that the sufficient plastic deformation is applied uniformly on the work piece. The optical microstructure is homogeneous. In addition, the strengthening phase θ′ is fine and dispersive...: (a) 1-1-2; (b) 5-4-2 图7 合金第二相的能谱(图6(a)中的A和B) Fig.7 Energy spectra of second-phase in alloys (points A(a) and B(b) shown in Fig.6 (a)) 2.4 试样的拉伸断口形貌 图8所示为典型的拉伸断口形貌.图8(a)和(b)所示为一般试样的拉伸......
Effects of Multiple Strengthening Treatments on Mechanical Properties and Stability of Nanoscale Precipitated Phases in an Aluminum-Copper-Lithium AlloyS.Ahmadi1,H.Arabi2,A.Shokuhfar31. Department... precipitated phases in an AA2090 alloy have been evaluated in this research.Various tests such as hardness,tensile,electrical resistance,differential scanning calorimetric(DSC),and transmission electron......
