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電弧增材制造GH3039組織和性能研究
作者:
作者單位:

1.河北工業(yè)大學(xué);2.鋼鐵研究總院;3.鞍鋼集團(tuán)北京研究院

作者簡(jiǎn)介:

通訊作者:

中圖分類號(hào):

TG146.1-5

基金項(xiàng)目:

國(guó)家重點(diǎn)研發(fā)計(jì)劃(項(xiàng)目號(hào)2017YFB1103703)和河北工業(yè)大學(xué)聯(lián)合培養(yǎng)博士研究生項(xiàng)目(項(xiàng)目號(hào)2018GN003)資助


Microstructure and mechanical properties of GH3039 Fabricated by WAAM
Author:
Affiliation:

1.Hebei University of Technology;2.Central Iron and Steel Research Institute;3.Ansteel Beijing Research Institure

Fund Project:

National Key R&D Program of China (No. 2017YFB1103703); the Joint Doctoral Training Foundation of HEBUT (No. 2018GN0003)

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    摘要:

    鎳基高溫合金GH3039廣泛地應(yīng)用于航空發(fā)動(dòng)機(jī)燃燒室等零部件。采用增材制造技術(shù)制備GH3039部件可以克服其加工性能差、材料利用率低等問題。本研究首次采用基于熔化極氣體保護(hù)焊的電弧增材制造（GMAW-WAAM）技術(shù)制備了GH3039薄壁件。利用光學(xué)顯微鏡（OM）、顯微硬度儀和拉伸試驗(yàn)分析了薄壁構(gòu)件的組織和性能。結(jié)果表明，采用GMAW-WAAM制備的GH3039構(gòu)件組織致密，無(wú)氣孔或裂紋等缺陷。合金的顯微組織主要由高度方向生長(zhǎng)的粗大柱狀晶和層間細(xì)小晶粒構(gòu)成。沉積態(tài)合金具有較好的室溫和高溫性能：室溫抗拉強(qiáng)度520~540MPa，斷后延伸率36~40%； 800°C抗拉強(qiáng)度189MPa，斷后延伸率35.4%。本研究驗(yàn)證了采用GMAW-WAAM技術(shù)制備GH3039部件的可行性。

    Abstract:

    GH3039 has been extensively used in aeronautic industries. Poor machinability and low material usage are common in GH3039 components, which could be resolved by frabricated by additive manufacturing. In this study, a GH3039 thin wall part was fabricated by gas metal arc welding wire arc additive manufacturing (GMAW-WAAM). Optical microscope (OM) observation, microhardness indentation and tensile tests were applied to investigate the microstructure and mechanical properties of the part. Result shows that the defect-free dense part is mainly consisted of interlayer fine grain and coarse column grain, which grew vertically. The ambient temperature ultimate tensile strength (UTS) and fracture elongation (El) of the as deposited part are 520~540MPa and 36~40%, respectively. The elevated temperature (800°C) UTS and El along the deposition direction is 189MPa and 35.4%, respectively. This study verified the feasibility of manufacturing GH3039 part by GMAW-WAAM.

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引用本文

方前,趙琳,張大越,陳翠欣,田志凌,殷福星.電弧增材制造GH3039組織和性能研究[J].稀有金屬材料與工程,2022,51(3):1141~1144.[FangQian, Zhao Lin, Zhang Dayue, Chen Cuixin, Tian Zhiling, Yin Fuxing. Microstructure and mechanical properties of GH3039 Fabricated by WAAM[J]. Rare Metal Materials and Engineering,2022,51(3):1141~1144.]
DOI：10.12442/j. issn.1002-185X.20210725

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  • 收稿日期:2021-08-17
  • 最后修改日期:2021-09-28
  • 錄用日期:2021-10-27
  • 在線發(fā)布日期: 2022-04-06
  • 出版日期: 2022-03-30