| Ta对低铬高钨镍基单晶高温合金微观组织的影响 |
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| 引用本文： | 吕明,石怀荣,刘传让. Ta对低铬高钨镍基单晶高温合金微观组织的影响[J]. 机械工程师, 2013, 0(12): 26-28 |
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| 作者姓名： | 吕明 石怀荣 刘传让 |
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| 作者单位： | [1]蚌埠学院机械与电子工程系,安徽蚌埠233000 [2]安徽省蚌埠市钰诚新材料科技有限公司,安徽蚌埠233000 |
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| 基金项目： | 安徽高等学校省级自然科学研究项目（KJ20132197） |
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| 摘 要： | 通过对3种不同Ru和Cr含量的低Cr高W镍基单晶铸造高温合金1100℃的时效和热处理组织观察与γ／γ’两相的成分分析，研究Ta对镍基单晶高温合金铸态微观的影响。结果表明：Ta不会改变镍基单晶高温合金中析出相的种类，但会强烈促进共晶γ’的形成。Ta改变了γ’的形貌，随Ta含量增加，γ’形状由圆形向方形转变。
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| 关 键 词： | 镍基单晶高温合金 钽（Ta） 显微组织 |
Influence of Ta on Microstructure of Low Cr and High W Contents in Ni-Base Single Crystal Superalloys |
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| LV Ming,SHI Huai-rong,LIU Chuan-rang. Influence of Ta on Microstructure of Low Cr and High W Contents in Ni-Base Single Crystal Superalloys[J]. Mechanical Engineer, 2013, 0(12): 26-28 |
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| Authors: | LV Ming SHI Huai-rong LIU Chuan-rang |
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| Affiliation: | 2 ( l.Departments of Mechanical and Electronic Engineering, Bengbu College, Bengbu 233000, China; 2.Yucheng New Material Science and Technology Co. LTD, Bengbu 233000, China) |
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| Abstract: | The influences of Ta on Ihe elemental partitioning ratio and microstruetural evolution have been investigated in three low eh,-omium and high tungsten content cast Ni-based single crystal superalloys with various levels of Ru and Cr additions. The test results indicate that the sorts of precipitates are not changed byTa, but Ta can strongly promote the form of γ＇ and the formatio of euteetie γ＇. The morphology and size of γ＇ phase are effected by the addition of Ta. With the irlerease of Ta eontent, the γ＇ changes from ellipse to squareness. |
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| Keywords: | N i-base single crystal superalloy： Ta： microstructure |
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