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硼對(duì)鑄態(tài)Al0.3CoCrFeNi高熵合金組織及性能的影響
作者:
作者單位:

1.上海理工大學(xué) 材料與化學(xué)學(xué)院;2.上海電機(jī)學(xué)院

作者簡(jiǎn)介:

通訊作者:

中圖分類(lèi)號(hào):

TG146.1

基金項(xiàng)目:

上海市地方院校能力建設(shè)項(xiàng)目(21010500900)；上海大件熱制造工程技術(shù)研究中心(18DZ2253400)


Effect of Boron addition on microstructure and propertiesof as-cast Al0.3CoCrFeNi high entropy alloy
Author:
Affiliation:

1.School of Materials and Chemistry,University of Shanghai for Science and Technology;2.School of Materials engineering,Shanghai Dianji University

Fund Project:

1、Capacity building project of local colleges and universities of shanghai(No.2010500900) 2、Shanghai engineering research center of hot manufacturing,Shanghai Dianji University(No.18DZ2253400)

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    摘要:

    本文采用冷坩堝懸浮熔煉法制備了Al0.3CoCrFeNiBx (x=0,0.01,0.05,0.1)系列高熵合金。利用X射線衍射儀、電子背散射衍射分析、掃描電子顯微鏡及附帶的波譜儀分析了B的添加對(duì)Al0.3CoCrFeNi合金組織結(jié)構(gòu)的影響,研究了Al0.3CoCrFeNiBx合金的顯微硬度、室溫摩擦磨損性能及室溫壓縮性能。結(jié)果表明：Al0.3CoCrFeNi合金為FCC結(jié)構(gòu),隨著B(niǎo)含量的增加,FCC相基體中晶界處Cr2B析出相逐漸增多,且Cr2B相由顆粒狀分布逐漸轉(zhuǎn)變?yōu)檫B續(xù)網(wǎng)狀分布,致使合金的硬度、耐磨性和屈服強(qiáng)度均逐漸提高?？梢?jiàn),Cr2B析出相彌散強(qiáng)化作用顯著,Al0.3CoCrFeNiB0.1綜合性能更佳。

    Abstract:

    Al0.3CoCrFeNiBx(x= 0,0.01, 0.05, 0.1) high entropy alloys were fabricated by cold crucible levitation melting. The effect of addition of B on the microstructures of Al0.3CoCrFeNiBxalloys were studied using X-ray diffraction, electron backscatter diffraction, scanning electron microscopy with wavelength dispersive X-ray spectroscopy. The microhardness, friction and wear properties and compression properties of Al0.3CoCrFeNiBxalloys at room temperature were analyzed. The results show that Al0.3CoCrFeNi alloy is FCC structure. With increasing B content, the Cr2B precipitated phase increases gradually at the grain boundaries of FCC phase matrix, and the Cr2B phase gradually changes from granular distribution to continuous network distribution, resulting in the alloy microhardness, wear resistance and yield strength are gradually improved. It can be seen that the precipitation of Cr2B has significant dispersion strengthening effect, and the comprehensive performance of Al0.3CoCrFeNiB0.1is better.

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李榮斌,鄒傳樂(lè),張志璽,張如林,彭望君.硼對(duì)鑄態(tài)Al0.3CoCrFeNi高熵合金組織及性能的影響[J].稀有金屬材料與工程,2023,52(2):667~674.[Li Rongbin, Zou Chuanle, Zhang Zhixi, Zhang Rulin, Peng Wangjun. Effect of Boron addition on microstructure and propertiesof as-cast Al0.3CoCrFeNi high entropy alloy[J]. Rare Metal Materials and Engineering,2023,52(2):667~674.]
DOI：10.12442/j. issn.1002-185X.20220057

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  • 收稿日期:2022-01-20
  • 最后修改日期:2022-02-09
  • 錄用日期:2022-02-24
  • 在線發(fā)布日期: 2023-03-09
  • 出版日期: 2023-02-28