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Al-6.3Cu AC-GTAW電弧增材成形的氣孔控制
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北京航空航天大學(xué),北京航空航天大學(xué),北京航空航天大學(xué),北京航空航天大學(xué),北京航空航天大學(xué),Cranfield University,UK MKAL

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北京市科技計(jì)劃裝備制造專項(xiàng)資助項(xiàng)目;中央高?;究蒲袠I(yè)務(wù)費(fèi)專項(xiàng)資金資助項(xiàng)目(YWF-15-GJSYS-096)


Porosity Control of Wire + Arc Additively Manufactured Al-6.3Cu Alloy Deposition Using AC-GTAW Process
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Beihang University,Beihang University,Beihang University,Beihang University,Beihang University,Cranfield University,UK MKAL

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    摘要:

    采用AC-GTAW工藝進(jìn)行Al-6.3Cu鋁合金電弧填絲單道多層成形試驗(yàn),針對不同熱輸入、空氣和氬氣兩種環(huán)境及不同送絲速度條件,研究過程參數(shù)及環(huán)境氣氛對成形件內(nèi)部氣孔的影響。結(jié)果表明,熱輸入對氣孔的影響最大,控制熱輸入能減少試件中氣孔數(shù)量和大?。辉谶m當(dāng)控制熱輸入條件下,采用氬氣環(huán)境和低送絲速度可顯著減少內(nèi)部氣孔缺陷。試驗(yàn)發(fā)現(xiàn),I=125A,TS=0.30m/min,氬氣環(huán)境下,WFS=2.0m/min 時(shí),氣孔數(shù)量最少,尺寸最小。

    Abstract:

    Al-6.3Cu alloy straight wall samples were produced using AC-GTAW process. The influence of heat input, environmental atmosphere, and wire feed speed on porosity characteristics of deposition samples were investigated. It is observed that heat input is the most important factor affecting the porosity defect. Gas pore counts and its diameter can be reduced with proper heat input. With lower heat input, the gas pores can be further reduced in argon environment and lower wire feed speed. The experimental results show that, in argon environment, with travel speed of 0.30m/min and wire feed speed of 2.0m/min, the gas pores can be controlled effectively.

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從保強(qiáng),孫紅葉,彭鵬,齊鉑金,趙 罡,丁佳洛. Al-6.3Cu AC-GTAW電弧增材成形的氣孔控制[J].稀有金屬材料與工程,2017,46(5):1359~1364.[Cong Baoqiang, Sun Hongye, Peng Peng, Qi Bojin, Zhao Gang, Ding Jialuo. Porosity Control of Wire + Arc Additively Manufactured Al-6.3Cu Alloy Deposition Using AC-GTAW Process[J]. Rare Metal Materials and Engineering,2017,46(5):1359~1364.]
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  • 收稿日期:2016-01-15
  • 最后修改日期:2016-04-20
  • 錄用日期:2016-05-19
  • 在線發(fā)布日期: 2017-09-27
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