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噴丸預(yù)處理對Ti6Al4V合金低溫等離子體氮化的影響
作者:
作者單位:

1.西北工業(yè)大學(xué) 航空學(xué)院，陜西 西安 710072;2.西安理工大學(xué) 材料科學(xué)與工程學(xué)院，陜西 西安 710048;3.中國人民解放軍空軍工程大學(xué) 航空航天工程學(xué)院，陜西 西安 710038

作者簡介:

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中圖分類號:

TG174.4

基金項目:

the National Natural Science Foundation of China (Nos.51771155) and National Science and Technology Major Project (2017-VII-0012-0107).


Effect of Shot Peening Pretreatment on Low Temperature Plasma Nitriding of Ti6Al4V Alloy
Author:
Affiliation:

1.School of Aeronautics, Northwestern Polytechnical University, Xi'an 710072, China;2.School of Material Science and Engineering, Xi 'an University of Technology, Xi 'an 710048, China;3.Aeronautic Engineering Institute, Air Force Engineering University, Xi 'an 710038, China

Fund Project:

National Natural Science Foundation of China (51771155); National Science and Technology Major Project (2017-VII-0012-0107)

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    摘要:

    為改善鈦合金表面耐磨性能，同時達(dá)到防止薄壁零部件變形和節(jié)約能源的目的，以Ti6Al4V鈦合金為對象，研究了噴丸強(qiáng)化預(yù)處理對鈦合金低溫滲氮層及耐磨性的改善作用。結(jié)果表明，噴丸強(qiáng)化預(yù)處理能夠有效促進(jìn)鈦合金表面低溫離子滲氮過程，在500 ℃低溫滲氮試驗條件下，隨著噴丸預(yù)處理強(qiáng)度的增大，鈦合金滲氮效率逐步提高，滲氮層的表面硬度、承載能力和表觀韌性逐步增加，使得滲氮層的耐磨性能逐步提高。當(dāng)噴丸預(yù)處理強(qiáng)度增加到0.25 mmA時，Ti6Al4V鈦合金滲氮層的表面硬度比單純滲氮處理試樣提高32.7%，磨損率降低42.3%，使鈦合金基體的磨損率降低70.5%，較好地實(shí)現(xiàn)了噴丸預(yù)處理促進(jìn)鈦合金低溫離子滲氮的目標(biāo)。

    Abstract:

    In order to improve the wear resistance of titanium alloy, and to prevent the deformation of thin-walled components, taking Ti6Al4V alloy as the object, the effect of shot peening pretreatment on the low-temperature nitriding of titanium alloy was studied. The results show that the pretreatment of shot peening (SP) can effectively promote the plasma nitriding process at low temperature. Under the test conditions of 500 °C, with the increase of shot peening strength, nitriding efficiency of pretreated samples increases gradually, and the surface hardness, load-bearing capacity and the wear resistance of nitrided layer increase gradually. Compared with unpretreated nitrided samples (Ti6Al4V-PN), when the shot strength increases to 0.25 mmA, the surface hardness of the pretreated nitrided samples (SP(0.25)-PN) increases by 32.7% and the wear rate decreases by 42.3%. The goal of shot peening pretreatment to promote low-temperature plasma nitriding of Ti6Al4V alloy is well achieved.

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引用本文

劉珍,于首明,劉道新,史海蘭,何光宇.噴丸預(yù)處理對Ti6Al4V合金低溫等離子體氮化的影響[J].稀有金屬材料與工程,2021,50(10):3462~3469.[Liu Zhen, Yu Shouming, Liu Daoxin, Shi Hailan, He Guangyu. Effect of Shot Peening Pretreatment on Low Temperature Plasma Nitriding of Ti6Al4V Alloy[J]. Rare Metal Materials and Engineering,2021,50(10):3462~3469.]
DOI：10.12442/j. issn.1002-185X.20200586

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歷史
  • 收稿日期:2020-08-10
  • 最后修改日期:2021-09-25
  • 錄用日期:2020-12-22
  • 在線發(fā)布日期: 2021-10-28
  • 出版日期: 2021-10-25