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Microstructures and interfacial quality of diffusion bonded TC21 titanium alloy joints LIU Hui-jie, FENG Xiu-li State Key Laboratory of Advanced Welding Production Technology, Harbin Institute of Technology, Harbin 150001, China Received 4 January 2010; accepted 12 April 2010 Abstract: Diffusion bonding of TC21 titanium alloy was carried out at temperature ranging from 780 °C to 980 °C......
Trans. Nonferrous Met. Soc. China 26(2016) 599-606 Hydrogen absorption characteristics and microstructural evolution of TC21 titanium alloy Bao-guo YUAN, Yu-bin ZHENG, Yu-jie WANG, Long-qing GONG... and microstructural evolution of TC21 titanium alloy were investigated by kinetic model analysis, optical microscopy (OM) and X-ray diffraction (XRD). The results show that the hydrogen absorption reaction......
号:TG 14 文献标志码:A Influence of high temperature deformation parameters on microstructure and properties of TC21 titanium alloy ZHAO Yan-lei1, LI Bo-long1, ZHU Zhi-shou2, NIE...: The hot deformation behavior of TC21 titanium alloy was investigated at 880-950 ℃, in a strain rate range of 0.01-10 s-1 and with the total deformation of 50%. The influence of hot deformation......
TC21钛合金原始微观组织 Fig. 1 Original microstructure of TC21 titanium alloy 2 结果与分析 2.1 流变应力 图2所示为40%变形后TC21钛合金在不同变形温度和不同应变速率条件下的真应力-应变曲线.在变形开始阶段,随着应变的增加,各条件下试样流变应力均迅速增加,出现加工硬化现象[13].到达...)所示.当变形温度为970 ℃时,钛合金微观组织完全由粗大的相组成,由于此时温度在相变点之上,相已经完全溶解,如图4(d)所示.990 ℃变形时,其微观组织与970 ℃时基本一致,主要由相组成,但晶粒尺寸显著增大,如图4(e)所示. 图2 不同温度下TC21钛合金高温流变曲线 Fig. 2 Flow stress curves of TC21 titanium alloy......
Trans. Nonferrous Met. Soc. China 23(2013) 2882-2889 Microstructure and mechanical properties of TC21 titanium alloy after heat treatment Zhi-feng SHI, Hong-zhen GUO, Jin-yang HAN, Ze-kun YAO School... heat treatments and influence of microstructure on mechanical properties of TC21 titanium alloy were investigated. The results indicate that the excellent mechanical properties can be obtained......
. Therefore the impact toughness value of basket microstructure is higher than that of Widmanstatten microstructure. Key words: TC21 titanium alloy; bi-modal microstructure; lamellar microstructure; impact... welded counterparts. TC21 titanium alloy is a new α+β titanium alloy developed by Northwest Institute for Non-ferrous Metal Research with self-determinate intellectual asset. It belongs to Ti-Al-Mo......
键词:TC21钛合金；片层组织特征；断裂韧度 中图分类号:TG 146 文献标志码:A Influence of lamellar microstructure feature on fracture toughness of TC21 alloy DANG Wei1, XUE Xiang-yi1, LI Jin-shan1, HU... the relationship between lamellar microstructure feature (thickness of α laths, width of α lath at grain boundary and α colony size) and fracture toughness, the microstructures and fracture toughness of TC21 alloy......
mm撞击杆,打击气压分别为0.09,0.1,0.11和0.12 MPa,相应的名义应变率约为2100,3500,4300和5100 s-1. 表1 TC21钛合金的化学成分 Table 1 Chemical constitution of TC21 titanium alloy (mass fraction, %) 图2 动态剪切试样及尺寸 Fig. 2... alloy under diferent evolvement stages[J]. Rare Metal Materials and Engineering, 2009, 38(2): 233-236. Effect of cooling ways on adiabatic shear sensitivity of TC21 titanium alloy YANG Hong-bin1, 2......
) Abstract: Tensile tests were performed on TC21 titanium alloy with Widmanstatten microstructure (W) and bimodal microstructure (BM) at temperature ranging from 298 to 1 023 K and strain rate ranging... microstructures show a manner of transgranular fracture. Neither adiabatic shear band nor deformation twinning is found in the tested samples. Key words: TC21 titanium alloy; Widmanstatten microstructure......
to investigating the hot deformation behavior of titanium alloys [5-9]. TC21 alloy, which is a recently developed alpha-beta damage tolerance titanium alloy, is characterized by high strength, high... bonded TC21 titanium alloy joints [J]. Transactions of Nonferrous Metals Society of China, 2011, 21: 58-64. [13] ZURADA J M. Introduction to artificial neural networks [M]. New York: West Publishing Co......
