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TC4鈦合金L型材高溫彎曲蠕變的數(shù)值模擬研究
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1.大連理工大學(xué)材料科學(xué)與工程學(xué)院,遼寧省凝固控制與數(shù)字化制備技術(shù)重點實驗室;2.中國航空制造技術(shù)研究院;3.大連理工大學(xué)材料科學(xué)與工程學(xué)院，遼寧省凝固控制與數(shù)字化制備技術(shù)重點實驗室

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遼寧省“興遼英才計劃”項目資助(項目號XLYC1902084)


Numerical Simulation of Bending Creep of TC4 Titanium Alloy L Profile at High Temperature
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Key Laboratory of Solidification Control and Digital Preparation Technology Liaoning Province,School of Materials Science and Engineering,Dalian University of Technology

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    摘要:

    利用ABAQUS有限元軟件,針對TC4鈦合金L型材,分別在蠕變溫度為500℃、600℃和700℃,及蠕變時間為600s、1200s、1800s的條件下,進行高溫壓彎蠕變的數(shù)值模擬分析,研究溫度和時間對TC4鈦合金L型材高溫壓彎蠕變變形后回彈量的影響規(guī)律。數(shù)值模擬結(jié)果表明,TC4鈦合金應(yīng)力松弛效果受溫度影響明顯,當溫度為700℃時,應(yīng)力松弛后殘余應(yīng)力降低至50MPa以下；蠕變時間為600s時,應(yīng)力松弛后殘余應(yīng)力已經(jīng)降低到趨于穩(wěn)定的極限值,繼續(xù)增加蠕變時間,應(yīng)力松弛效應(yīng)不發(fā)生顯著變化。

    Abstract:

    Based on ABAQUS finite element software, in view of TC4 titanium alloy L profile, under the conditions of creep temperature of 500℃, 600℃ and 700℃, and creep time of 600s, 1200s, 1800s, the numerical simulation analysis of high temperature bending creep is carried out to study the influence of temperature and time on the springback after high temperature bending creep deformation of TC4 titanium alloy L profile. The numerical simulation results show that the stress relaxation effect of TC4 titanium alloy is significantly affected by temperature, when the temperature is 700℃, the residual stress after stress relaxation is reduced to below 50MPa; when the creep time is 600s, the residual stress after stress relaxation has been reduced to a stable limit value, continue to increase the creep time, the stress relaxation effect is not significant.

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趙鵬,吳為,付雪松,曾元松,陳國清,周文龍. TC4鈦合金L型材高溫彎曲蠕變的數(shù)值模擬研究[J].稀有金屬材料與工程,2022,51(1):211~216.[Zhao Peng, Wu Wei, Fu Xuesong, Zeng Yuansong, Chen Guoqing, Zhou Wenlong. Numerical Simulation of Bending Creep of TC4 Titanium Alloy L Profile at High Temperature[J]. Rare Metal Materials and Engineering,2022,51(1):211~216.]
DOI：10.12442/j. issn.1002-185X.20210033

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歷史
  • 收稿日期:2021-01-12
  • 最后修改日期:2021-04-14
  • 錄用日期:2021-05-12
  • 在線發(fā)布日期: 2022-02-09
  • 出版日期: 2022-01-28