80wt.%/(CoCrNi)20wt.%復(fù)合材料。并對(duì)其進(jìn)行了退火處理。利用X射線衍射、掃描電鏡、能譜分析、電子背散射衍射、硬度計(jì)、摩擦磨損試驗(yàn)機(jī)、電化學(xué)工作站和X射線光電子能譜分析等技術(shù)手段研究了不同退火溫度(600 ℃、800 ℃、1000 ℃)對(duì)(AlCoCrFeNi)80wt.%/(CoCrNi)20wt.%的組織結(jié)構(gòu)、硬度、耐磨性和耐腐蝕性的影響規(guī)律及機(jī)理。經(jīng)過(guò)600 ℃退火后,復(fù)合材料的相組成沒有變化,均由BCC相和B2相組成,晶粒比退火前更加均勻細(xì)小。經(jīng)過(guò)800 ℃和1000 ℃退火后,FCC相出現(xiàn),晶粒更加粗大。退火溫度越高,FCC相比重越大,晶粒尺寸越大。隨退火溫度的升高,復(fù)合材料的硬度和耐磨性先提高后降低。由于細(xì)晶強(qiáng)化作用,600 ℃退火試樣的硬度最高和耐磨性最好,與退火前的試樣相比,硬度提高了26.9 %,磨損失重降低了32 %。退火處理促進(jìn)了鈍化膜中Cr2O3的富集,提高了復(fù)合材料的耐腐蝕性,1000 ℃退火試樣的耐腐蝕性最優(yōu)。"/>

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退火溫度對(duì)(AlCoCrFeNi)80wt. %/(CoCrNi)20wt. %復(fù)合材料耐磨和耐腐蝕性的影響
作者:
作者單位:

1.山東農(nóng)業(yè)大學(xué)機(jī)械與電子工程學(xué)院;2.山東大學(xué)機(jī)電與信息工程學(xué)院

作者簡(jiǎn)介:

通訊作者:

中圖分類號(hào):

TG139

基金項(xiàng)目:

山東省自然基金-基于熱歷史的中熵合金熔體動(dòng)力學(xué)、組織結(jié)構(gòu)與力學(xué)性能調(diào)控研究(項(xiàng)目編號(hào)：ZR2022ME207)；山東省現(xiàn)代農(nóng)業(yè)技術(shù)體系雜糧產(chǎn)業(yè)創(chuàng)新團(tuán)隊(duì)基金，


Effect of annealing temperature on wear resistance and corrosion resistance of (AlCoCrFeNi)80wt. %/(CoCrNi)20wt. % composites
Author:
Affiliation:

1.College of Mechanical and Electronic Engineering,Shandong Agricultural University,Tai’an;2.College of Mechanical,Electronic and Information Engineering,Shandong University,Wei’hai

Fund Project:

the National Science Foundation of Shandong Province (No. ZR2022ME207), Innovation Team Fund for coarse cereals Industry of Modern Agricultural Technology System in Shandong Province, 14th Five-Year National Key R AND D Program sub-project (No.2022YFD2001903-03),

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    摘要:

    腐蝕與磨損是影響機(jī)械關(guān)鍵零部件使用壽命的主要因素,因此對(duì)新型耐磨和耐腐蝕材料的研究具有重要意義。高熵合金(High entropy alloy, HEA)和中熵合金(Medium entropy alloy,MEA)作為新興材料,具有特殊的組織結(jié)構(gòu)和優(yōu)異的性能,成為耐磨和耐腐蝕材料的研究熱點(diǎn)。本文利用SLM技術(shù)制備了耐磨耐腐蝕性能優(yōu)異的(AlCoCrFeNi)80wt.%/(CoCrNi)20wt.%復(fù)合材料。并對(duì)其進(jìn)行了退火處理。利用X射線衍射、掃描電鏡、能譜分析、電子背散射衍射、硬度計(jì)、摩擦磨損試驗(yàn)機(jī)、電化學(xué)工作站和X射線光電子能譜分析等技術(shù)手段研究了不同退火溫度(600 ℃、800 ℃、1000 ℃)對(duì)(AlCoCrFeNi)80wt.%/(CoCrNi)20wt.%的組織結(jié)構(gòu)、硬度、耐磨性和耐腐蝕性的影響規(guī)律及機(jī)理。經(jīng)過(guò)600 ℃退火后,復(fù)合材料的相組成沒有變化,均由BCC相和B2相組成,晶粒比退火前更加均勻細(xì)小。經(jīng)過(guò)800 ℃和1000 ℃退火后,FCC相出現(xiàn),晶粒更加粗大。退火溫度越高,FCC相比重越大,晶粒尺寸越大。隨退火溫度的升高,復(fù)合材料的硬度和耐磨性先提高后降低。由于細(xì)晶強(qiáng)化作用,600 ℃退火試樣的硬度最高和耐磨性最好,與退火前的試樣相比,硬度提高了26.9 %,磨損失重降低了32 %。退火處理促進(jìn)了鈍化膜中Cr2O3的富集,提高了復(fù)合材料的耐腐蝕性,1000 ℃退火試樣的耐腐蝕性最優(yōu)。

    Abstract:

    Corrosion and wear are the main factors affecting the service life of key mechanical parts. Therefore, it is of great significance to study new wear-resistant and corrosion-resistant materials. As emerging materials, high entropy alloy (HEA) and medium entropy alloy (MEA) have special microstructure and excellent properties, which have become research hotspots of wear and corrosion resistant materials. In this paper, (AlCoCrFeNi)80wt. %/(CoCrNi)20wt. % composites with excellent wear and corrosion resistance were prepared by SLM technology. And it was annealed. The effects of different annealing temperatures (600 °C, 800 °C, 1000 °C) on the microstructure, hardness, wear resistance and corrosion resistance of (AlCoCrFeNi)80wt. %/(CoCrNi)20wt. % were studied by means of X-ray diffraction, scanning electron microscopy, energy spectrum analysis, electron backscatter diffraction, hardness tester, friction and wear tester, electrochemical workstation and X-ray photoelectron spectroscopy. After annealing at 600 °C, the phase composition of the composites does not change, which is composed of BCC phase and B2 phase, and the grains are more uniform and fine than before annealing. After annealing at 800 °C and 1000 °C, the FCC phase appears and the grains are coarser. The higher the annealing temperature, the heavier the FCC and the larger the grain size. With the increase of annealing temperature, the hardness and wear resistance of the composites increase first and then decrease. Due to the fine grain strengthening effect, the hardness and wear resistance of the sample annealed at 600 °C were the highest. Compared with the sample before annealing, the hardness increased by 26.9 % and the wear weight loss decreased by 32 %. Annealing treatment promoted the enrichment of Cr2O3 in the passive film and improved the corrosion resistance of the composites.

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郭晶,王德興,鄭杜彬,翟若凱,宋凱凱,李玉道.退火溫度對(duì)(AlCoCrFeNi)80wt. %/(CoCrNi)20wt. %復(fù)合材料耐磨和耐腐蝕性的影響[J].稀有金屬材料與工程,2024,53(12):3437~3446.[GUO Jing, WANG Dexing, Zheng Dubin, Zhai Ruokai, Song Kaikai, Li Yudao. Effect of annealing temperature on wear resistance and corrosion resistance of (AlCoCrFeNi)80wt. %/(CoCrNi)20wt. % composites[J]. Rare Metal Materials and Engineering,2024,53(12):3437~3446.]
DOI：10.12442/j. issn.1002-185X.20230633

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  • 收稿日期:2023-10-10
  • 最后修改日期:2023-12-27
  • 錄用日期:2024-01-05
  • 在線發(fā)布日期: 2024-12-23
  • 出版日期: 2024-12-16