| Effect of sintering parameters on warm compacted iron-based material |
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| 作者姓名： | 李元元 肖志瑜 倪东惠 夏伟 陈维平 |
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| 作者单位： | Advanced Metallic Materials Research and Processing Technology Center，Advanced Metallic Materials Research and Processing Technology Center，Advanced Metallic Materials Research and Processing Technology Center，Advanced Metallic Materials Research and Processing Technology Center，Advanced Metallic Materials Research and Processing Technology Center South China University of Technology，Guangzhou 510640，China，South China University of Technology，Guangzhou 510640，China，South China University of Technology，Guangzhou 510640，China，South China University of Technology，Guangzhou 510640，China，South China University of Technology，Guangzhou 510640，China |
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| 基金项目： | Project(5 0 13 5 0 2 0 )supportedbytheNationalNaturalScienceFoundationofChina,project(2 0 01AA337010)supportedbytheNationalAdvancedMaterialsCommitteeofChina,majorproject([2 0 0 0 ]No.77)supportedbytheEducationMinistry(inScienceandTechnologyResearch),p |
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| 摘 要： | 1 INTRODUCTIONItiswellknownthatincreasingdensityisthebestwaytoincreasetheperformanceofpowdermet allurgy(P/M ) parts.ConventionalP/Mprocessingcanproduceiron basedpartswithdensitylessthan 7.1g/cm3(arelativedensityof 90 %approximately) .Theirmechanicalpropertiesaresubstantiallylessthanthoseoftheirfulldensitycounterpart .TherearemanymethodsthatcanproduceP/M partswithrela tivelyhighdensitysuchaswarmcompaction ,hightemperaturesintering ,doublepress/doublesinteringandforging .Warmcompactioni…
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Effect of sintering parameters on warm compacted iron-based material |
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| LI Yuan-yuan,XIAO Zhi-yu,NGAI Tungwai Leo,XIA Wei,CHEN Wei-ping.Effect of sintering parameters on warm compacted iron-based material[J].Transactions of Nonferrous Metals Society of China,2003,13(6). |
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| Authors: | LI Yuan-yuan XIAO Zhi-yu NGAI Tungwai Leo XIA Wei CHEN Wei-ping |
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| Abstract: | Iron-based powder metallurgy material was prepared by warm compaction at 125℃ using a compacting pressure of 700 Mpa.Sintering temperature ranging from 1100℃ to 1300℃ and sintering time ranging from 40min to 80 min were used to study the effects of sintering parameters on the compacts.Die wall lubrication polytetrafluoroethylene(PTFE)emulsion was also applied in combination with warm compaction in hope to increase the compact density and the mechanical properties of the sintered material.Green and sintered density,spring back effect and sinter shrinkage were measured.Mechanical properties of both as-sinter and heat treated samples were also measured.Results show that mechanical properties of the sintered compacts increase with the increase of sintering temperature and sintering time.Sample prepared by die wall lubricated warm compaction always shows higher density and mechanical properties. |
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| Keywords: | warm compaction powder metallurgy iron-based material sintering die wall lubrication |
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