通过传统烧结、微波烧结和放电等离子烧结对原位生成的AlV-Al-VC纳米复合材料进行的研究。

Investigation on in-situ formed AlV-Al-VC nano composite through conventional, microwave and spark plasma sintering.

作者信息

Ghasali Ehsan, Orooji Yasin, Germi Hadi Niknam

机构信息

College of Materials Science and Engineering,Nanjing Forestry University,No. 159, Longpan Road,Nanjing, 210037 Jiangsu, People's Republic of China.

Ceramic Dept, Materials and Energy Research Center, Alborz, Iran.

出版信息

Heliyon. 2019 May 21;5(5):e01754. doi: 10.1016/j.heliyon.2019.e01754. eCollection 2019 May.

DOI:10.1016/j.heliyon.2019.e01754

PMID:31193508

原文链接:https://pmc.ncbi.nlm.nih.gov/articles/PMC6531639/

Abstract

In the present study, the effect of heating methods has been studied on the microstructure and mechanical properties of in-situ formed AlV-Al-VC nano-composite. 5 and 15 wt % of VC were added to Al matrix and conventional and microwave sintering processes were performed at 600 °C. While spark plasma sintering process was done at 450 °C with initial and final pressure of 10 and 30 MPa, respectively. The XRD results revealed the formation of AlV intermetallic compound in microwave sintered sample, while in both spark plasma sintered and conventionally prepared specimens, the only crystalline phases were Al and VC. Microstructure studies, demonstrated a uniform distribution of 5wt% VC reinforcement in Al matrix but the 15wt%VC addition led to form agglomerates in all prepared samples. The highest bending strength (275 ± 13 MPa) and hardness (260 ± 13 Vickers) were obtained in the spark plasma sintered sample with 15wt% of VC content.

摘要

在本研究中，已对加热方法对原位形成的AlV-Al-VC纳米复合材料的微观结构和力学性能的影响进行了研究。向铝基体中添加了5 wt%和15 wt%的VC，并在600℃下进行了常规烧结和微波烧结工艺。而放电等离子烧结工艺在450℃下进行，初始压力和最终压力分别为10 MPa和30 MPa。X射线衍射结果表明，在微波烧结样品中形成了AlV金属间化合物，而在放电等离子烧结样品和常规制备的样品中，唯一的晶相是Al和VC。微观结构研究表明，5wt%的VC增强体在铝基体中分布均匀，但添加15wt%的VC导致在所有制备的样品中形成团聚体。在VC含量为15wt%的放电等离子烧结样品中获得了最高的抗弯强度（275±13 MPa）和硬度（260±13维氏硬度）。