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首页> 外文期刊>Materials Science and Engineering >Effect of carbon content on interfacial microstructure and mechanical properties of a vacuum hot-compressed bonding titanium-steel composite
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Effect of carbon content on interfacial microstructure and mechanical properties of a vacuum hot-compressed bonding titanium-steel composite

机译：碳含量对真空热压缩钛 - 钢复合材料界面微观结构和力学性能的影响

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摘要

Vacuum hot-rolled bonding (VHRB) titanium (Ti)-steel clad composites have been increasingly serving in both severe corrosion and heavy load conditions, and their overall properties severely depend on the microstructure of interfacial reaction layer. Notably, introducing an appropriate interdiffusion barrier to minimize the brittle Fe-Ti intermetallics has still been a popular scheme for optimizing their interfacial properties. In this work, with two low-alloyed steels of 0.06 and 0.16 wt% carbon (C) contents employed, the pure Ti -steel composite samples were successfully prepared via vacuum hot-compressed bonding (VHCB) in Gleeble-3500 system under the identical temperature/reduction/rate condition of 850 °C/70 %/0.01s~(-1). The interfacial reaction, microstructure and tensile property in two Ti-steel composites were investigated to estimate the C content effect via various characterizations, and the mechanisms were clarified. Results indicated that the diffusion of Ti, Fe and C mainly occurred in the interfacial reaction layers of two composites, and accordingly the reaction products of TiFe, TiFe_2 and TiC formed, together with the C-depleted α-Fe zone. The nanoscale TiC particles were mainly located at the steel side, and increased with the increasing C content. Correspondingly, the brittle TiFe layer and TiFe_2 layer decreased due to the increased TiC layer acting as a diffusion barrier. This led to an evident decrease of percent cleavage fracture area (CA, %) from 77% to 52% and a significant increase of interfacial tensile strength from 182 to 344 MPa.
机译：真空热轧粘合（VHRB）钛（TI）-Steel包层复合材料在严重的腐蚀和重载条件下越来越多地用于，它们的整体性质严重取决于界面反应层的微观结构。值得注意的是，引入适当的间隔阻挡层以最小化脆性Fe-Ti金属间金属间金属间隔物仍然是优化其界面性质的普遍方案。在这项工作中，使用的两个低合金钢为0.06和0.16wt％的碳（c）含量，通过在相同的相同的Gleeble-3500系统中成功地制备了纯Ti -Steel复合样品。温度/减少/速率条件为850°C / 70％/ 0.01s〜（-1）。研究了两种Ti-钢复合材料中的界面反应，微观结构和拉伸性能，通过各种表征来估计C含量效果，澄清机制。结果表明，Ti，Fe和C的扩散主要发生在两种复合材料的界面反应层中，并因此与C耗尽的α-Fe区一起形成的TiGe，TiGe_2和TiC的反应产物。纳米级TiC颗粒主要位于钢侧，并随着C含量的增加而增加。相应地，由于作为扩散屏障的增加的层层，脆性图层和TIFE_2层由于增加而导致的。这导致百分比裂解骨折区域（Ca，％）从77％至52％的百分比下降，并且从182至344MPa的界面拉伸强度的显着增加。

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  • 来源
    《Materials Science and Engineering》 |2021年第8期|141802.1-141802.11|共11页
  • 作者

    Xiaoyu Yang; Kai Guo; Yunzhe Gao; Bingnan Wu; Jian Li; Yuwei Gao; Qingfeng Wang; Fucheng Zhang;

  • 作者单位

    State Key Laboratory of Metastable Materials Science and Technology Yanshan University 066004 Qinhuangdao China National Engineering Research Center for Equipment and Technology of Cold Strip Rolling Yanshan University 066004 Qinhuangdao China;

    State Key Laboratory of Metastable Materials Science and Technology Yanshan University 066004 Qinhuangdao China National Engineering Research Center for Equipment and Technology of Cold Strip Rolling Yanshan University 066004 Qinhuangdao China;

    State Key Laboratory of Metastable Materials Science and Technology Yanshan University 066004 Qinhuangdao China National Engineering Research Center for Equipment and Technology of Cold Strip Rolling Yanshan University 066004 Qinhuangdao China;

    State Key Laboratory of Metastable Materials Science and Technology Yanshan University 066004 Qinhuangdao China National Engineering Research Center for Equipment and Technology of Cold Strip Rolling Yanshan University 066004 Qinhuangdao China;

    State Key Laboratory of Metastable Materials Science and Technology Yanshan University 066004 Qinhuangdao China National Engineering Research Center for Equipment and Technology of Cold Strip Rolling Yanshan University 066004 Qinhuangdao China;

    State Key Laboratory of Metastable Materials Science and Technology Yanshan University 066004 Qinhuangdao China National Engineering Research Center for Equipment and Technology of Cold Strip Rolling Yanshan University 066004 Qinhuangdao China;

    State Key Laboratory of Metastable Materials Science and Technology Yanshan University 066004 Qinhuangdao China National Engineering Research Center for Equipment and Technology of Cold Strip Rolling Yanshan University 066004 Qinhuangdao China;

    State Key Laboratory of Metastable Materials Science and Technology Yanshan University 066004 Qinhuangdao China National Engineering Research Center for Equipment and Technology of Cold Strip Rolling Yanshan University 066004 Qinhuangdao China;

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  • 正文语种 eng
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  • 关键词

    Composite; Vacuum hot-compressed bonding; C content; Microstructure; Mechanical properties;

    机译：合成的;真空热压缩粘合;C含量;微观结构;机械性能;

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