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Ti-B25鈦合金管材擠壓成形數(shù)值模擬及實驗研究
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Study on Cold Rolling Technology,Microstructures and Mechanical Properties of TC16 Titanium Alloy Sheets
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    摘要:

    為了加快推動Ti-B25鈦合金在艦船通信系統(tǒng)上的應用,利用前期構(gòu)造的本構(gòu)方程和熱加工圖優(yōu)化出的工藝參數(shù),使用DEFORM-3D有限元軟件模擬了變形溫度900℃、應變速率0.1 s-1工藝參數(shù)下的管材擠壓過程,并對模擬過程進行了實際擠壓驗證。結(jié)果表明:在變形溫度900℃、應變速率0.1 s~(-1)條件下能成功擠壓出62 mm×12 mm的Ti-B25鈦合金管坯,并且管坯具有良好的表面質(zhì)量,組織中存在再結(jié)晶晶粒。管坯經(jīng)過830℃/1 h+600℃/8 h固溶時效處理后具有良好的強-塑性匹配,滿足艦船天線管使用要求。

    Abstract:

    In order to accelerate the application of Ti-B25 titanium alloy in ship communication system,DEFORM-3 D finite element software was used to simulate the pipe extrusion process under the deformation temperature of 900 ℃ and the strain rate of 0. 1 s-1 with the constructed constitutive equation and the optimized process parameters in the previous work. And the pipe extrusion experiment of Ti-B25 alloy was performed to validate the results of FE simulation. The results show that the pipe blank of 62 mm × 12 mm can be successfully extruded under the deformation temperature of900 ℃ and the strain rate of 0. 1 s-1. The pipe blank has good surface quality and recrystallized microstructure. After solution aging treatment at 830 ℃/1 h + 600 ℃/8 h,the pipe blank exhibits good stress-plastic matching,which meets the requirement of the pipes used in the shipboard antenna.

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孫花梅;劉偉;戚運蓮;李修雷;毛小南;洪權(quán);. Ti-B25鈦合金管材擠壓成形數(shù)值模擬及實驗研究[J].鈦工業(yè)進展,2021,38(1):25-29.

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  • 在線發(fā)布日期: 2021-03-16
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