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of as-cast and forged high Nb-TiAl based alloy 3.2 合金的蠕变性能 锻造态与铸造态高Nb-TiAl合金在800℃/220MPa条件下的蠕变曲线如图2所示,可见经过锻造的高Nb-TiAl合金蠕变寿命减小,蠕变应变增加.表明锻造工艺提高了合金的高温塑性,但未能改善合金的高温蠕变性能. 图2 铸造态与锻造态高Nb-TiAl合金在800℃/220MPa条件下的蠕变曲线 Fig.2 Creep curves of forged and as-cast high Nb-TiAl alloy at the conditions of 800℃/220MPa 锻造态高Nb-TiAl合金在800℃分别施加200MPa,220MPa,240MPa应力测定的蠕变曲线,如图3(a)所示.由图中曲线1可知,当施加应力为200MPa时,合金在蠕变初期的应变较小,蠕变中期的平......
of as-cast and forged high Nb-TiAl based alloy 3.2 合金的蠕变性能 锻造态与铸造态高Nb-TiAl合金在800℃/220MPa条件下的蠕变曲线如图2所示,可见经过锻造的高Nb-TiAl合金蠕变寿命减小,蠕变应变增加.表明锻造工艺提高了合金的高温塑性,但未能改善合金的高温蠕变性能. 图2 铸造态与锻造态高Nb-TiAl合金在800℃/220MPa条件下的蠕变曲线 Fig.2 Creep curves of forged and as-cast high Nb-TiAl alloy at the conditions of 800℃/220MPa . 锻造态高Nb-TiAl合金在800℃分别施加200MPa,220MPa,240MPa应力测定的蠕变曲线,如图3(a)所示.由图中曲线1可知,当施加应力为200MPa时......
Research on Ultrafine Tungsten Carbide-Cobalt (WC-Co) Cemented Carbide Rods of Miniature Drills for Highly Integrated Printed Circuit Board (PCB)Xiaoliang SHI, Gangqin SHAO, Xinglong DUAN... ultrafine tungsten carbide-cobalt (WC-Co) cemented carbide rods through vacuum sintering plus sinterhip technology. The microstructure, Vickers hardness, density and Rockwell A hardness (HRA......
Microstructure,texture and mechanical behavior characterization of hot forged cast ZK60 magnesium alloyS.M.H.Karparvarfard1,S.K.Shaha1,S.B.Behravesh1,H.Jahed1,B.W.Williams21. Department of Mechanical..., while the texture changed to sharp basaMeasured mechanical properties of the forged alloy showed that strength did not change, howductility improved by 75%. The analysis of the fracture surface......
match of high strength and high toughness. Key words: β titanium alloy; forged in two-phase region; inhomogeneity; precipitated phase; high strength and high toughness Foundation item: Project(2016GY-207......
Solidification microstructure of Cr4Mo4V steel forged in the semi-solid stateWeifeng Liu1,2,3,Yanfei Cao3,Yifeng Guo3,Mingyue Sun1,3,Bin Xu1,3,Dianzhong Li31. Key Laboratory of Nuclear Materials and Safety Assessment, Institute of Metal Research, Chinese Academy of Sciences2. College of Materials Science and Engineering, University of Science and Technology of China3. Shenyang National Laboratory......
Homogeneity of microstructure and Vickers hardness in cold closed-die forged spur-bevel gear of 20CrMnTi alloyDONG Li-ying(董丽颖)1, LAN Jian(兰箭)1, 2, ZHUANG Wu-hao(庄武豪)1(1. School of Materials Science... and improving the quality of the product. The homogeneity of microstructure of cold closed-die forged gears can highly affect their service performance. the homogeneity of microstructure and Vickers......
Insensitivity on tensile properties of forged Mg-13Li-X alloy to hot-rolling deformation LI Li(栗 丽)1, LI Huan-xi(李焕喜)1, ZHOU Tie-tao(周铁涛)1, CHEN Chang-qi(陈昌麒)1, WU Qiu-lin(邬秋林)2, ZHANG Qing... Institute, Beijing 100088, China Received 20 April 2006; accepted 30 June 2006 Abstract: In order to examine the dependences of tensile properties of a forged Mg-13Li-X alloy on hot-rolling deformation......
Microstructure and mechanical properties of forged Al-7.1Zn-1.1Mg-1.6Cu-0.14Zr alloy after two-step ageing treatment at 120 and 170℃WANG Shaohuaa,ZHANG Xingguoa,YANG Shoujieb,FANG Canfenga,HAO Haia...="ChDivSummary" name="ChDivSummary">The tensile properties,electrical conductivity,and microstructure of the forged Al-7.1Zn-1.1Mg-1.6Cu-0.14Zr alloy were investigated after a two-step ageing treatment......
rods were rotary forged. The influences of the rotary forging process on the relative density, hardness and microstructure of Mo-Ti-Zr alloy rods were investigated. The results are as follows... Jing-lian, CHENG Hui-chao, TIAN Jia-min, LU Ming-yuan (State Key Laboratory of Powder Metallurgy, Central South University, Changsha 410083, China) Abstract: Mo-Ti-Zr alloy rods with diameter of 28......