MICROSTRUCTURE EVOLUTION AND CRACKING ANALYSIS ON THE SURFACE LAYER OF THE CONTINUOUS EXTRUSION DIE DURING THE SERVICE PROCESS
The earlier failures are always occurred in the H13 steel continuous extrusion-wheel die for section copper and its alloy. The experimental analysis on the microstructures evolution of the extrusion-wheel die after different service times were made,and the tests showed that the martensite resolved i...
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| Format: | Article |
| Language: | zho |
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Editorial Office of Journal of Mechanical Strength
2017-01-01
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| Series: | Jixie qiangdu |
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| Online Access: | http://www.jxqd.net.cn/thesisDetails#10.16579/j.issn.1001.9669.2017.06.015 |
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| author | NIE BinYing |
| author_facet | NIE BinYing |
| author_sort | NIE BinYing |
| collection | DOAJ |
| description | The earlier failures are always occurred in the H13 steel continuous extrusion-wheel die for section copper and its alloy. The experimental analysis on the microstructures evolution of the extrusion-wheel die after different service times were made,and the tests showed that the martensite resolved into tempered martensite and the hardness reduced gradually in the surface layer of the groove of continuous extrusion-wheel die in the early stage service. As service time delayed,the martensite resolution accelerated and large quantities carbides precipitated,and the thermal fatigue cracking initiated from the subsurface of the groove. After that the services proceed,the martensite resolved completely and carbides coarsen seriously. The fatigue cracks of the subsurface layer drove towards the surface and propagated into the interior of the groove on the assistance of the melting copper alloy,which resulted in failure of the groove of the continuous extrusion-wheel die. |
| format | Article |
| id | doaj-art-a40cfce0a9b34e479c3db0722a298776 |
| institution | Kabale University |
| issn | 1001-9669 |
| language | zho |
| publishDate | 2017-01-01 |
| publisher | Editorial Office of Journal of Mechanical Strength |
| record_format | Article |
| series | Jixie qiangdu |
| spelling | doaj-art-a40cfce0a9b34e479c3db0722a2987762025-01-15T02:33:08ZzhoEditorial Office of Journal of Mechanical StrengthJixie qiangdu1001-96692017-01-01391343134730600136MICROSTRUCTURE EVOLUTION AND CRACKING ANALYSIS ON THE SURFACE LAYER OF THE CONTINUOUS EXTRUSION DIE DURING THE SERVICE PROCESSNIE BinYingThe earlier failures are always occurred in the H13 steel continuous extrusion-wheel die for section copper and its alloy. The experimental analysis on the microstructures evolution of the extrusion-wheel die after different service times were made,and the tests showed that the martensite resolved into tempered martensite and the hardness reduced gradually in the surface layer of the groove of continuous extrusion-wheel die in the early stage service. As service time delayed,the martensite resolution accelerated and large quantities carbides precipitated,and the thermal fatigue cracking initiated from the subsurface of the groove. After that the services proceed,the martensite resolved completely and carbides coarsen seriously. The fatigue cracks of the subsurface layer drove towards the surface and propagated into the interior of the groove on the assistance of the melting copper alloy,which resulted in failure of the groove of the continuous extrusion-wheel die.http://www.jxqd.net.cn/thesisDetails#10.16579/j.issn.1001.9669.2017.06.015H13 steelCopper and copper alloy profileExtrusion-wheel dieMicrostructure evolution |
| spellingShingle | NIE BinYing MICROSTRUCTURE EVOLUTION AND CRACKING ANALYSIS ON THE SURFACE LAYER OF THE CONTINUOUS EXTRUSION DIE DURING THE SERVICE PROCESS Jixie qiangdu H13 steel Copper and copper alloy profile Extrusion-wheel die Microstructure evolution |
| title | MICROSTRUCTURE EVOLUTION AND CRACKING ANALYSIS ON THE SURFACE LAYER OF THE CONTINUOUS EXTRUSION DIE DURING THE SERVICE PROCESS |
| title_full | MICROSTRUCTURE EVOLUTION AND CRACKING ANALYSIS ON THE SURFACE LAYER OF THE CONTINUOUS EXTRUSION DIE DURING THE SERVICE PROCESS |
| title_fullStr | MICROSTRUCTURE EVOLUTION AND CRACKING ANALYSIS ON THE SURFACE LAYER OF THE CONTINUOUS EXTRUSION DIE DURING THE SERVICE PROCESS |
| title_full_unstemmed | MICROSTRUCTURE EVOLUTION AND CRACKING ANALYSIS ON THE SURFACE LAYER OF THE CONTINUOUS EXTRUSION DIE DURING THE SERVICE PROCESS |
| title_short | MICROSTRUCTURE EVOLUTION AND CRACKING ANALYSIS ON THE SURFACE LAYER OF THE CONTINUOUS EXTRUSION DIE DURING THE SERVICE PROCESS |
| title_sort | microstructure evolution and cracking analysis on the surface layer of the continuous extrusion die during the service process |
| topic | H13 steel Copper and copper alloy profile Extrusion-wheel die Microstructure evolution |
| url | http://www.jxqd.net.cn/thesisDetails#10.16579/j.issn.1001.9669.2017.06.015 |
| work_keys_str_mv | AT niebinying microstructureevolutionandcrackinganalysisonthesurfacelayerofthecontinuousextrusiondieduringtheserviceprocess |