首页> 美国卫生研究院文献>Materials >Low Temperature Phase Transformations in Copper-Quenched Ti-44.5Al-8Nb-2.5V Alloy
【2h】

Low Temperature Phase Transformations in Copper-Quenched Ti-44.5Al-8Nb-2.5V Alloy

机译:铜淬火Ti-44.5Al-8Nb-2.5V合金的低温相变

代理获取
本网站仅为用户提供外文OA文献查询和代理获取服务,本网站没有原文。下单后我们将采用程序或人工为您竭诚获取高质量的原文,但由于OA文献来源多样且变更频繁,仍可能出现获取不到、文献不完整或与标题不符等情况,如果获取不到我们将提供退款服务。请知悉。

摘要

In this study, an easily controlled transformation similar to the β + α → β + α + γ and the analysis of metastable phases in a β solidifying Ti-44.5Al-8Nb-2.5V alloy were investigated. Therefore, a liquid alloy copper-quenching followed by annealing at an application temperature (850 °C) has been carried out. Following quenching, a microstructure composed of several supersaturated phases—the basket-weave β0 (βbv) phase, the plate-like α2 (αp) phase and the stripe-like γ (γs) phase—was obtained. In the annealing processes, phase transformations in the prior βbv and αp phases domain corresponded nicely to the β + α → β + α + γ transformation during solidification. Also, in the annealed γs phase, the kinetics of the phase transformations involving the metastable L12 phase was firstly detected by transmission electron microscopy (TEM). The L12 phase had a lattice structure similar to the γ phase, whereas the composition of the phase was similar to the α2 phase. The formation of the γ pre-twin phase with an anti-phase boundary (APB) was detected in the γs phase of the matrix. The orientation relationships between the γs and precipitated: γ (γp) phase are <101]γs//<114]γp, (101¯s//(1¯10)γp and (01¯0)γs//(221¯p.
机译:在这项研究中,研究了类似于β+α→β+α+γ的易于控制的转变,以及对β凝固Ti-44.5Al-8Nb-2.5V合金中亚稳相的分析。因此,已经进行了液态合金铜淬火,随后在施加温度(850℃)下退火。淬火后,获得了由几个过饱和相组成的微观结构,这些组织为篮式β0(βbv)相,板状α2(αp)相和条状γ(γs)相。在退火过程中,先前的bbv和αp相域中的相变很好地对应于凝固过程中的β+α→β+α+γ相变。同样,在退火的γs相中,首先通过透射电子显微镜(TEM)检测涉及亚稳态L12相的相变动力学。 L12相具有类似于γ相的晶格结构,而该相的组成类似于α2相。在基质的γs相中检测到具有反相边界(APB)的γ双胞胎相的形成。 γs和沉淀的γ(γp)相之间的取向关系为<101]γs// <114]γp,(10 1 ¯ )γ s //( 1 10)γ p 和(0 <数学xmlns:mml =“ http://www.w3.org/1998/Math/MathML” id =“ mm3” overflow =“ scroll”> < mrow> 1 0)γ s //(22个数学xmlns:mml =“ http://www.w3.org/1998/Math/MathML” id =“ mm4”溢出=“ scroll”> 1 )γ p

著录项

相似文献

  • 外文文献
  • 中文文献
  • 专利
代理获取

客服邮箱:kefu@zhangqiaokeyan.com

京公网安备:11010802029741号 ICP备案号:京ICP备15016152号-6 六维联合信息科技 (北京) 有限公司©版权所有
  • 客服微信

  • 服务号