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新型損傷容限型鈦合金TC21稀土催化固體滲硼
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教育部博士點(diǎn)基金項(xiàng)目 (20113218110018)；江蘇省高校優(yōu)勢(shì)學(xué)科建設(shè)工程資助項(xiàng)目；南京航空航天大學(xué)基本科研業(yè)務(wù)費(fèi)專項(xiàng)科研項(xiàng)目 (NP2011016)；江蘇省普通高校研究生科研創(chuàng)新計(jì)劃資助項(xiàng)目 (CXZZ12_0142)


Characteristics of RE-B Surface Diffusion Process on the New Damage Tolerance
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    摘要:

    采用固體粉末滲硼法對(duì)新型損傷容限型鈦合金TC21表面進(jìn)行稀土催化化學(xué)熱處理，通過掃描電鏡（SEM）、X射線衍射（XRD）、能譜（EDS）與金相顯微鏡（OM）研究了滲層組織形貌和物相組成。結(jié)果表明：鈦基表面滲硼層包括以整體薄壁狀在基體外層分布的TiB2和以須狀晶形式在次表層分布的TiB雙強(qiáng)化滲層，滲層與基體結(jié)合緊密；滲劑中稀土含量對(duì)滲層性能的影響存在有最佳值；且發(fā)現(xiàn)此方法實(shí)現(xiàn)了鈦合金TC21表面B、C共滲

    Abstract:

    The solid-state boriding of new damage tolerance TC21 titanium alloy was carried out to harden surface layers through rare earth (RE) B diffusion process. By means of SEM, XRD, OM and EDS, the microstructure and morphology of boride coatings were investigated. The results indicate that boride layers include a monolithic titanium diboride (TiB2) at the top and a titanium boride (TiB) sub-layer that mostly consisted of TiB whiskers combining with titanium matrix closely. Meanwhile, the contents of RE in boriding medium possess a considerably optimal value. B and C surface co-diffusion with RE on TC21 alloy can be realized by this method

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朱延松,盧文壯,左敦穩(wěn),孫玉利,王 晗,胥 軍.新型損傷容限型鈦合金TC21稀土催化固體滲硼[J].稀有金屬材料與工程,2014,43(3):692~697.[Zhu Yansong, Lu Wenzhuang, Zuo Dunwen, Sun Yuli, Wang Han, Xu Jun. Characteristics of RE-B Surface Diffusion Process on the New Damage Tolerance[J]. Rare Metal Materials and Engineering,2014,43(3):692~697.]
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  • 收稿日期:2013-03-21
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  • 在線發(fā)布日期: 2014-06-27
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