镍基高温合金GH4133B本构模型及热加工图的热模拟研究
Analysis of deformation behavior and microstructure evolution for GH4133B superalloy based on isothermal compression test
查看参考文献12篇
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文摘
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在Gleeble-1500D热模拟试验机上对镍基高温合金GH4133B进行变形温度为940~1060 ℃,应变速率为0.001~1 s~(–1),变形量为50%的热模拟压缩实验,并对不同工艺参数下的变形试样进行微观组织观察。结合Arrhenius双曲正弦型方程并引入Zener-Hollomon参数,构建该合金热变形的本构模型,绘制热加工图。获得该合金的热变形激活能为448 kJ/mol,在温度为1020 ℃,应变速率为1 s~(–1)时,功率耗散达到峰值。基于本构模型的建立和热加工图的绘制等热模拟压缩研究结果和微观组织测试结果,确定GH4133B镍基高温合金最佳的热加工变形温度和应变速率分别为1020~1060 ℃和0.01~0.1 s~(–1)。 |
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其他语种文摘
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The deformation behavior of the GH4133B Ni-base superalloy in hot working process was investigated by the isothermal compression tests carried out at the temperature of 940-1060℃ and the strain rate of 0.001-1.0 s~(–1) with the height reduction of 50%. The microstructure of the deformed samples under different processing parameters was observed. Combined with Arrhenius hyperbolic sine equation and Zener-Hollomon parameter, the constitutive model of hot deformation of the alloy was established, and the hot working diagram was drawn. The activation energy of hot deformation of the alloy was 448 kJ/mol. the power dissipation reached its peak at 1020 ℃ and strain rate of 1 s~(–1). Based on the establishment of constitutive model and processing map, the results of isothermal compression simulation and microstructure test analysis show that the best hot working deformation temperature of GH4133B nickel base superalloy is 1020-1060 ℃ and the strain rate is 0.01-0.1 s~(–1). |
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来源
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航空材料学报
,2021,41(6):44-50 【核心库】
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DOI
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10.11868/j.issn.1005-5053.2020.000146
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关键词
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GH4133B
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高温合金
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热模拟压缩
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本构模型
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热加工图
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组织演变
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地址
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1.
陕西科技大学机电工程学院, 西安, 710021
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西北工业大学材料学院, 西安, 710072
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浙江温州轻工研究院, 浙江, 温州, 325019
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语种
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中文 |
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文献类型
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研究性论文 |
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ISSN
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1005-5053 |
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学科
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金属学与金属工艺 |
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基金
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国家自然科学基金
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中国博士后科学基金
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陕西省自然科学基金
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浙江省温州市科技计划项目
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文献收藏号
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CSCD:7111401
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