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CMT-Pin增材制備GH4169高溫合金柱形陣列成形工藝和組織特征
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作者單位:

1.南昌航空大學(xué) 航空制造工程學(xué)院;2.首都航天機(jī)械有限公司

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中圖分類號(hào):

TG457.1

基金項(xiàng)目:

江西省自然科學(xué)基金(20202BAB204017),航空科學(xué)基金(2020Z048056001)


CMT-Pin additive preparation of GH4169 high temperature alloy columnar array forming process and Microstructure
Author:
Affiliation:

1.School of Aeronautical Manufacturing Engineering,Nanchang Hangkong University;2.Capital Aerospace Machinery Company,Bengjing ,China

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    摘要:

    本文采用?1.2mm的ER-GH4169焊絲,通過(guò)CMT-Pin增材技術(shù)在5mm厚Q235碳鋼基板上制備柱形陣列結(jié)構(gòu),研究了Pin針成形工藝和組織特征。結(jié)果表明：當(dāng)Ball/Cyl Adaptation參數(shù)為負(fù)時(shí),Pin針頭型為平頭；當(dāng)Ball/Cyl Adaptation為非負(fù)時(shí),Pin針頭型為球頭；Altitude Adaptation控制Pin針生長(zhǎng)的高度,獲得Pin針高度在(2.30~4.96)mm之間。Pin針的微觀組織分為Pin軸區(qū),熔合區(qū),母材區(qū)。Pin軸區(qū)分布著大量的柱狀晶,沿軸向外生長(zhǎng)；在熔合區(qū),沿Pin軸往上柱狀晶由細(xì)晶轉(zhuǎn)變?yōu)榇志?熔合區(qū)為一條極細(xì)的熔合線,晶間析出大量條狀的Laves相；在母材區(qū),存在組織明暗交接分層。

    Abstract:

    In this paper,we used ?1.2mm ER-GH4169 welding wire to prepare columnar array structure on 5mm thick Q235 carbon steel substrate by CMT-Pin additive technique,and investigated the Pin forming process and tissue characteristics.The results show that when the Ball/Cyl Adaptation parameter is negative,the Pin head shape is Cylindrical;when the Ball/Cyl Adaptation is non-negative,the Pin head shape is Ball;Altitude Adaptation controls the height of Pin growth,and the Pin height is obtained between (2.30~4.96)mm.The microstructure of Pins is divided into Pin axis zone,fusion zone,and base material zone;Pin axis area has a large number of columnar crystals,which grow outward along the axis; in the fusion area,the columnar crystals change from fine crystals to coarse crystals along the Pin axis upward,and the fusion area is a very fine fusion line,with a large number of strips of Laves phase precipitated between the crystals;in the base material area,there is a tissue of light and dark interlayer.

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肖鵬華,王磊,湯瑩瑩,肖琳,夏春,劉奮成,柯黎明. CMT-Pin增材制備GH4169高溫合金柱形陣列成形工藝和組織特征[J].稀有金屬材料與工程,2023,52(6):2134~2140.[Xiao Penghua, Wang Lei, Tang Yingying, Xiao Lin, Xia Chun, Liu Fencheng, Ke Liming. CMT-Pin additive preparation of GH4169 high temperature alloy columnar array forming process and Microstructure[J]. Rare Metal Materials and Engineering,2023,52(6):2134~2140.]
DOI：10.12442/j. issn.1002-185X.20220431

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歷史
  • 收稿日期:2022-05-17
  • 最后修改日期:2022-06-26
  • 錄用日期:2022-07-12
  • 在線發(fā)布日期: 2023-07-07
  • 出版日期: 2023-06-30