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基于JMatPro軟件TIG堆焊層Co-8.8Al-9.8W-0.2B合金的相組成及開裂行為
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蘭州理工大學(xué) 省部共建有色金屬先進(jìn)加工與再利用國(guó)家重點(diǎn)實(shí)驗(yàn)室,蘭州理工大學(xué) 省部共建有色金屬先進(jìn)加工與再利用國(guó)家重點(diǎn)實(shí)驗(yàn)室,蘭州理工大學(xué) 省部共建有色金屬先進(jìn)加工與再利用國(guó)家重點(diǎn)實(shí)驗(yàn)室,蘭州理工大學(xué) 省部共建有色金屬先進(jìn)加工與再利用國(guó)家重點(diǎn)實(shí)驗(yàn)室

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TG146.1 6

基金項(xiàng)目:

國(guó)家自然科學(xué)基金(51561019)和甘肅省自然科學(xué)基金(1308RJYA022)資助


Phase Composition and Cracking Behavior on TIG Cladding Layer of Co-8.8Al-9.8W-0.2B Superalloy Based on JMatPro Software
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State Key Laboratory of Advanced Processing and Recycling of Nonferrous Metals,Lanzhou University of Technology,State Key Laboratory of Advanced Processing and Recycling of Nonferrous Metals,Lanzhou University of Technology,State Key Laboratory of Advanced Processing and Recycling of Nonferrous Metals,Lanzhou University of Technology,State Key Laboratory of Advanced Processing and Recycling of Nonferrous Metals,Lanzhou University of Technology

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    摘要:

    Co-Al-W合金是一種由γ′-Co3(Al,W)相沉淀強(qiáng)化的新型鈷基高溫合金，為了研究含硼元素對(duì)不銹鋼基體上TIG堆焊層的相組成及開裂行為，通過(guò)JMatPro熱力學(xué)模擬計(jì)算軟件，對(duì)堆焊層Co-8.8Al-9.8W-0.2B合金不同部位析出相的類型、含量進(jìn)行了模擬計(jì)算和實(shí)驗(yàn)驗(yàn)證。研究發(fā)現(xiàn)，堆焊層0.2B合金不同位置相組成相同，但各相的含量不同。根據(jù)對(duì)堆焊層合金相組成和相對(duì)含量的分析發(fā)現(xiàn)，堆焊層表面的裂紋主要為熱裂紋，裂紋的形成是熱應(yīng)力、相變應(yīng)力以及Laves相綜合作用的結(jié)果。

    Abstract:

    With the precipitation strengthening phase of ternary compound γ′-Co3(Al,W), the Co-Al-W superalloy is a novel cobalt-based superalloy. In order to study the phase composition and cracking behavior of Co-8.8Al-9.8W-0.2B cladding layer on the 304 stainless steel with TIG welding. The phase composition and relative content of elements at different positions in cladding layer were studied with thermodynamic simulation calculation of JMatPro software. The results show that the phase composition should be the same in different position of cladding layer, but the content of those phases are difference. Based on the analysis of the phase composition and content of the elements in the cladding layer, the surface cracks of cladding layer are hot cracks, which are the results of thermal stress, the phase transformation stress and Laves phase.

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徐仰濤,夏榮里,沙岐振,夏天東.基于JMatPro軟件TIG堆焊層Co-8.8Al-9.8W-0.2B合金的相組成及開裂行為[J].稀有金屬材料與工程,2017,46(9):2459~2464.[XU Yangtao, XIA Rongli, SHA Qizhen, XIA Tiandong. Phase Composition and Cracking Behavior on TIG Cladding Layer of Co-8.8Al-9.8W-0.2B Superalloy Based on JMatPro Software[J]. Rare Metal Materials and Engineering,2017,46(9):2459~2464.]
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  • 收稿日期:2015-12-30
  • 最后修改日期:2017-10-08
  • 錄用日期:2016-12-06
  • 在線發(fā)布日期: 2017-11-29
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