共搜索到2586条信息，每页显示10条信息，共259页。用时：0小时0分0秒614毫秒
重载齿轮钢的高温性能张国强1,2,董瀚2,王毛球2,赵亚平3,刘荣佩-1(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先进钢铁材料技术国家工程研究中心3.宝山钢铁股份有限公司 特殊钢分公司,上海 200940)摘 要:通过Gleeble-1500D热模拟试验机高温拉伸试验,对比研究了17Cr2Ni2 MoVNb和17Cr2Ni2 Mo钢的高温性能.结果表明:因微合金元素V(0.1%,质量分数,下同),Nb(0.036%)产生细晶强化及固溶强化,17Cr2Ni2 MoVNb钢的抗拉强度比1......
Improved strength and ductility of high alloy containing Al–12Zn–3Mg–2.5Cu alloy by combining non-isothermal step rolling and cold rollingV.V.Ravikumar,S.KumaranDepartment of Metallurgical... of the rolled alloy is approximately 628 MPa with 7% ductility.关键词:......
......
and mechanisms to improve ductility and toughness of particle reinforced metal matrix composites Abstract: The factors influencing the ductility and toughness of particle reinforced metal matrix composites were commented. Taking these as a background, the effect of particle shape on the ductility and fracture toughness of SiC p/LD2 composites was deeply studied. Finite......
Influence of size and distribution of W phase on strength and ductility of high strength Mg-5.1Zn-3.2Y-0.4Zr-0.4Ca alloy processed by indirect extrusionHansi Jiang1,Xiaoguang Qiao1,Chao Xu2,Shigeharu... ductility. In addition, the nano-scale dynamic W phase precipitates distributed in the un DRXed regions are refined at lower extrusion temperature. The smaller size of nano-scale W phase precipitates leads......
and stress field were simulated using the finite element software (ABAQUS) for Q345c continuous casting slab during cooling process. The hot ductility of continuous casting Q345c slabs was tested by Gleeble 2000 thermal/strain simulation machine. The hot ductility curve and high temperature tensile strength curve were obtained according to thermal simulation experiments. The results show......
稀土钇对奥氏体耐热钢高温拉伸性能影响及作用机制陈雷1,王龙妹1,刘晓1,杜晓建1(1.北京市钢铁研究总院冶金工艺研究所)摘 要:研究了钇对奥氏体耐热钢21Cr-11Ni-1.5Si-N的高温拉伸性能的影响及相关机制.在750~1 200℃,应变速率为0.005 s-1条件下进行了含与不含钇试样的热拉伸模拟试验及组织分析.结果表明:钇通过细化晶粒,强化晶界提高了试验钢在750~850℃的热塑性和抗拉强度;由于钇抑制了动态再结晶和再结晶晶粒长大,使得在850~1 050℃二者热塑性相当,而在1 050~1 200℃......
:连续柱状晶组织；室温超延展性；塑性提升；变形机制；织构；晶界；组织演化 中图分类号:TG249.7；TG146.1 文献标志码:A Extreme plastic extensibility and ductility improvement mechanisms of continuous columnar-grained copper...) Abstract: The major research advances are recommended that the extreme plastic extensibility of the high performance continuous columnar-grained (CCG) copper as well as the ductility improvement......
and ductility is achieved in the Zr–Ti composite as a result of the layered gradient microstructure. Tension–compression asymmetry is observed in the Zr–Ti composites, which may be attributed to twinning and microvoids induced by unbalanced diffusion. Key words: Zr–Ti layered structural material; diffusion annealing strengthening; tension–compression asymmetry yielding; ductility 1 Introduction Due......
of extended ductility 4 结论 1) 加铺层对于复合路面板的抗压强度影响较小,可以忽略不计. 2) 加铺层厚度越大,HE复合路面板的抗弯曲疲劳性能较PC路面板的提升越显著,且相同层厚下其改善效果均比CE的优. 3) HE的28 d劈裂抗拉强度分别为PC和CE的175%和128%.HE-50的劈裂强度略比CE-50的大,各试件并未明显沿层间黏结面破裂,加铺层复合路...: 203-212. [15] ZHU Yu, ZHANG Zhaocai, YANG Yingzi, et al. Measurement and correlation of ductility and compressive strength for engineered cementitious composites(ECC)produced by binary and ternary......
