2010专业英语 试题汉译英部分.doc

Al Cu Mg Ag La 合金的显微组织与力学性能合金的显微组织与力学性能 肖代红 黄伯云 宋 旼 陈康华 中南大学 粉末冶金国家重点实验室 长沙 410083 摘 要 采用金相显微镜 扫描电镜 透射电镜与力学性能 测试等方法 研究Ag与La对Al 5 3Cu 0 8Mg 质量分数 合金的显微组织与时效特性的影响 结果表明 添加0 1La 降低铸态Al 5 3Cu 0 8Mg 0 6Ag 合金的晶粒尺寸 但并不 能明显提高挤压态Al 5 3Cu 0 8Mg合金的时效硬化 添加 0 6Ag能提高挤压态Al 5 3Cu 0 8Mg合金的时效硬化能力与 抗拉强度 降低185 时的峰时效时间 这是由于Ag的添加 改变基体合金的时效析出相 合金的主要强化相由片状 相 和少量 相组成 同时 添加0 6Ag与0 1La有助于提高Al 5 3Cu 0 8Mg合金中 相的体积分数及热稳定性 最终使其 力学性能得到进一步改善 关键词 铝合金 Ag La 显微组织 力学性能 Microstructures and mechanical properties of Al Cu Mg Ag La alloys XIAO Dai hong HUANG Bai yun SONG Min CHEN Kang hua State Key Laboratory of Powder Metallurgy Central South University Changsha 410083 China Abstract A series of Al 5 3Cu 0 8Mg mass fraction based alloys with different Ag and La contents were investigated by optical microscope OM scanning electron microscopy SEM transmission electron microscopy TEM and mechanical properties testing The results show that adding 0 1La refines the grains of as cast Al 5 3Cu 0 8Mg 0 6Ag alloys but does not improve the hardness of the extruded Al 5 3Cu 0 8Mg alloys Adding 0 6Ag can increase the hardness and tensile strength of extruded Al 5 3Cu 0 8Mg alloys and decrease the peak aging time at 185 The coherent plate like phase and a small amount of phase are the predominant hardening phases of the Al 5 3Cu 0 8Mg 0 6Ag alloys at peak aged stage at 185 Moreover adding 0 1La into Al 5 3Cu 0 8Mg 0 6Ag alloy decreases the size and improves the density and the thermal stability of phase and then improves the mechanical properties of the alloy Key words aluminum alloys Ag La microstructure mechanical properties 国际标准刊号 国际标准刊号 ISSN 1009 6264 国内统一刊号 国内统一刊号 CN 11 4545 TG 回火温度对回火温度对 15Cr2Ni3MoW 钢组织与力学性能的影响钢组织与力学性能的影响 摘摘 要要 观察了 15Cr2Ni3MoW 钢在 200 600 区间回火处理后的力学性能和 组织变化 结果表明 该钢经 350 回火后出现大量稳定化的 M A 岛 在 500 550 回火后 M A 岛大量分解 析出的碳化物沿晶界连续分布 出现了回火 脆性 试验获得的最佳回火工艺为 350 回火 3h 后空冷 该工艺可使 15Cr2Ni3MoW 钢的屈服强度提高 37 冲击韧性提高 50 关键词关键词 15Cr2Ni3MoW 钢 粒状贝氏体 回火 M A 岛 性能 分类号分类号 TG142 1 TG156 5 相关文献相关文献 主题相关 参考文献 引用本文 Effect of tempering temperature on microstructure and mechanical properties of 15Cr2Ni3MoW steel Abstract The mechanical properties and microstructure evolution of 15Cr2Ni3MoW steel after tempering treatment in the range of 200 600 were investigated The results show that large amount of stabilized M A island appears after tempering treatment at 350 The M A islands decompose the precipitated carbide is distributed along grain boundary continuousally and tempering brittleness occurs for the steel tempered at 500 550 The optimized tempering process is tempering the steel at 350 for 3h and air cooling which increases ultimate tensile strength and impacting toughness of the steel by 37 and 50 respectively Key words 15Cr2Ni3MoW steel granular bainite tempering M A island property 材料热处理学报 TRANSACTIONS OF MATERIALS AND HEAT TREATMENT 起止页码 78 81 国际标准刊号 国际标准刊号 ISSN 1009 6264 国内统一刊号 国内统一刊号 CN 11 4545 TG 奥氏体化温度对奥氏体化温度对 10Ni3MnCuAl 钢贝氏体转变动力学的影响钢贝氏体转变动力学的影响 摘摘 要要 利用热膨胀相变仪 研究了 860 950 不同奥氏体化温度对 10Ni3MnCuAl 钢贝氏体连续转变动力学的影响 结果表明 奥氏体化温度越高 奥氏体晶粒越粗大 贝氏体连续转变起始温度 Bs 和 50 转变温度 Bm 越 低 但贝氏体转变终了温度 Bf 几乎不变 并且奥氏体化温度越高 贝氏体转变速 率峰向低温移动 贝氏体转变最大速率由相变驱动力和扩散速率共同决定 其中 相变驱动力是主要影响因素 关键词关键词 10Ni3MnCuAl 钢 奥氏体晶粒度 贝氏体 相变动力学 Effect of austenitizing temperature on bainite transformation kinetics in 10Ni3MnCuAl steel ZHANG Wei WU Xiao chun MIN Yong an School of Materials Science and Engineering Shanghai University Shanghai 200072 China Abstract The effects of austenitizing temperature between 860 and 950 on bainite continuous transformation kinetics for 10Ni3MnCuAl steel were investigated by dilatometric experiments The results show that the higher the austenitizing temperature the larger the austenite grain size AGS and the lower the bainite transformation start temperature Bs and 50 transformation temperature Bm Though the bainite transformation finish temperature Bf remains almost unchanged The peak of bainite transformation rate shift to lower temperature with the higher austenitizing temperature The highest bainite transformation rate at different austenitizing temperature depends on diffusion rate and driving force of which driving force is the main factor 著者文摘 Key words 10Ni3MnCuAl steel austenitic grain size bainite transformation kinetics 三种渗碳钢中残余奥氏体在冲击磨损中的行为三种渗碳钢中残余奥氏体在冲击磨损中的行为 摘摘 要要 渗碳钢中合金元素对渗碳过程中材料表面吸碳能力有很大影响渗碳钢中合金元素对渗碳过程中材料表面吸碳能力有很大影响 含有较含有较 多非碳化物形成元素多非碳化物形成元素 Si Mn 的的 22Si2MnCrNi2Mo 渗碳层的碳含量最低渗碳层的碳含量最低 只只 有有 0 65 含有较多碳化物形成元素的含有较多碳化物形成元素的 35CrMoV 渗碳层碳含量最高渗碳层碳含量最高 可达可达 1 05 三种渗碳钢冲击磨损试验结果表明 冲击磨损速率随着渗碳表层碳含 三种渗碳钢冲击磨损试验结果表明 冲击磨损速率随着渗碳表层碳含 量的增加先降低后增加量的增加先降低后增加 在碳含量在碳含量 0 82 时冲击磨损速率出现低谷 冲击磨损过时冲击磨损速率出现低谷 冲击磨损过 程中残余奥氏体由于应变诱发马氏体相变需消耗外加能量可降低磨损速率程中残余奥氏体由于应变诱发马氏体相变需消耗外加能量可降低磨损速率 得出磨得出磨 损速率与相变能之间呈指数关系 损速率与相变能之间呈指数关系 关键词关键词 渗碳渗碳 冲击磨损冲击磨损 残余奥氏体残余奥氏体 马氏体马氏体 Behavior of retained austenite in three carburized steels under impact wear load Abstract The capacity of absorbing carbon atoms strongly depends on the alloy elements in steels The carbon content of carburized layer in 22Si2MnCrNi2Mo steel with more non carbide forming elements Si Mn is only 0 65 but that in 35CrMoV 1 05 The results from the impact wear tests indicates that the impact wear rate decreases first and then increases with the increase of carbon content in carburized layers The minimum of the wear rates occurs in 0 82 C The deformation induced M transformation of the retained austenite in impact wear process brings about an additional consumption of applied impact energy which could give a decrease of wear rate of carburized layers A exponent relationship between impact wear rate and M transformation energy has been obtained Key words carburizing impact wear retained austenite martensite 无铅钎料焊点界面与剪切行为的研究无铅钎料焊点界面与剪切行为的研究 石家庄铁道学院材料科学与工程分院 河北石家庄 050043 摘摘 要要 研究了三种不同合金钎料回流时间和老化时间对焊点界面行为和剪切性能的影响 结果表明 回流时间和老化 对金属间化合物的生长和剪切力有相似的影响 焊后界面处和焊料中均有明显的金属间化合物 随着回流时间 和老化时间的延长 金属间化合物生长明显 层厚不断增大 界面形貌从长针状转变成扇贝状 并且齿高减小 合金成分对剪切力影响不明显 在中速应变率下 剪切力减小 Sn 3 5Ag 显现出较好的剪切性能 剪切力为 77 82N 著者文摘 关键词关键词 电子技术 无铅钎料 金属间化合物 剪切强度 Study on interface and shear behavior in lead free solder joint DING Ya ping QI Fang juan SUN Li YANG Ming hui College of Material Science and Engineering Shijiazhuang Railway Institute Shijiazhuang 050043 China Abstract The influences of reflow time and aging time in three lead free solders on solder joint interface and shear strength were investigated The results show that the effect of reflow time and aging time on IMC and shear force is quite similar IMC remarkably develop with increasing reflow and aging time shear force decreases In addition it is also found that the effect of alloy component on shear force is not significant and Sn 3 5Ag presents the better shear property than the others shear force is 77 82 N 著者文摘 Key words electron technology lead free solder IMC shear strength Relationship among Microstructure Processing and Applications The field of materials science engineering is often defined by the interrelationship between four topics synthesis and processing structure and composition properties and performance To understand its structure Structure can be considerer on several levels all of which influence final behaviors At the finest level is the electron configuration which affects properties such as color electrical conductivity and magnetic behavior The arrangement of electrons in an atom influence how it will bond to another atom and this in turn impacts the crystal structure The arrangement of the atoms or ions in the material also needs to be considered Crystalline ceramics have a very regular atomic arrangement whereas in noncrystalline or amorphous ceramics e g oxide glasses there is no long range order