PM processing of Al-Al2O3 composites and their characterisation
Aluminium based composites containing 5 to 20 vol.-%Al 2 O 3 as the reinforcing phase were synthesised by powder metallurgy. The process consisted of blending aluminium powder with Al 2 O 3 powder followed by hot compaction and hot extrusion. The microstructural features, mechanical properties and w...
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| Veröffentlicht in: | Powder metallurgy 2003, Vol.46 (3), p.219-223 |
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| creator | Soma Raju, K. Bhanu Prasad, V. V. Rudrakshi, G. B. Ojha, S. N. |
| description | Aluminium based composites containing 5 to 20 vol.-%Al
2
O
3
as the reinforcing phase were synthesised by powder metallurgy. The process consisted of blending aluminium powder with Al
2
O
3
powder followed by hot compaction and hot extrusion. The microstructural features, mechanical properties and wear characteristics of the composites were investigated with variation in volume fraction of Al
2
O
3
phase. The results indicated a continuous increase in yield and ultimate tensile strength with a marked decrease in ductility of the composites arising from increased Al
2
O
3
content. High temperature tensile test data revealed that the strength of the base material Al and composite materials containing 5 and 15%Al
2
O
3
decreased with increase in temperature. However, the rate of strength reduction was higher for the extruded compact of unreinforced aluminium than the composites. Lower wear rates were observed in the composite materials than the unreinforced aluminium compacts. An increase in Al
2
O
3
content led to a decrease in wear rate of composites under the applied load of 5-35 N and a range of sliding velocity from 0·25 to 1·5 m s
-1
. The reasons for improvement in strength and wear behaviour of composite materials are discussed in light of their microstructural features. |
| doi_str_mv | 10.1179/003258903225008553 |
| format | Article |
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2
O
3
as the reinforcing phase were synthesised by powder metallurgy. The process consisted of blending aluminium powder with Al
2
O
3
powder followed by hot compaction and hot extrusion. The microstructural features, mechanical properties and wear characteristics of the composites were investigated with variation in volume fraction of Al
2
O
3
phase. The results indicated a continuous increase in yield and ultimate tensile strength with a marked decrease in ductility of the composites arising from increased Al
2
O
3
content. High temperature tensile test data revealed that the strength of the base material Al and composite materials containing 5 and 15%Al
2
O
3
decreased with increase in temperature. However, the rate of strength reduction was higher for the extruded compact of unreinforced aluminium than the composites. Lower wear rates were observed in the composite materials than the unreinforced aluminium compacts. An increase in Al
2
O
3
content led to a decrease in wear rate of composites under the applied load of 5-35 N and a range of sliding velocity from 0·25 to 1·5 m s
-1
. The reasons for improvement in strength and wear behaviour of composite materials are discussed in light of their microstructural features.</description><identifier>ISSN: 0032-5899</identifier><identifier>EISSN: 1743-2901</identifier><identifier>DOI: 10.1179/003258903225008553</identifier><identifier>CODEN: PWMTAU</identifier><language>eng</language><publisher>London, England: Taylor & Francis</publisher><subject>Applied sciences ; Dispersion hardening metals ; Exact sciences and technology ; Metals. Metallurgy ; Powder metallurgy. Composite materials ; Production techniques</subject><ispartof>Powder metallurgy, 2003, Vol.46 (3), p.219-223</ispartof><rights>2003 IOM Communications for the Institute of Materials 2003</rights><rights>2003 IOM Communications for the Institute of Materials</rights><rights>2003 INIST-CNRS</rights><lds50>peer_reviewed</lds50><woscitedreferencessubscribed>false</woscitedreferencessubscribed></display><links><openurl>$$Topenurl_article</openurl><openurlfulltext>$$Topenurlfull_article</openurlfulltext><thumbnail>$$Tsyndetics_thumb_exl</thumbnail><linktopdf>$$Uhttps://journals.sagepub.com/doi/pdf/10.1179/003258903225008553$$EPDF$$P50$$Gsage$$H</linktopdf><linktohtml>$$Uhttps://journals.sagepub.com/doi/10.1179/003258903225008553$$EHTML$$P50$$Gsage$$H</linktohtml><link.rule.ids>314,776,780,4010,21798,27900,27901,27902,43597,43598</link.rule.ids><backlink>$$Uhttp://pascal-francis.inist.fr/vibad/index.php?action=getRecordDetail&idt=15240240$$DView record in Pascal Francis$$Hfree_for_read</backlink></links><search><contributor>WCA</contributor><creatorcontrib>Soma Raju, K.</creatorcontrib><creatorcontrib>Bhanu Prasad, V. V.</creatorcontrib><creatorcontrib>Rudrakshi, G. B.</creatorcontrib><creatorcontrib>Ojha, S. N.</creatorcontrib><title>PM processing of Al-Al2O3 composites and their characterisation</title><title>Powder metallurgy</title><description>Aluminium based composites containing 5 to 20 vol.-%Al
2
O
3
as the reinforcing phase were synthesised by powder metallurgy. The process consisted of blending aluminium powder with Al
2
O
3
powder followed by hot compaction and hot extrusion. The microstructural features, mechanical properties and wear characteristics of the composites were investigated with variation in volume fraction of Al
2
O
3
phase. The results indicated a continuous increase in yield and ultimate tensile strength with a marked decrease in ductility of the composites arising from increased Al
2
O
3
content. High temperature tensile test data revealed that the strength of the base material Al and composite materials containing 5 and 15%Al
2
O
3
decreased with increase in temperature. However, the rate of strength reduction was higher for the extruded compact of unreinforced aluminium than the composites. Lower wear rates were observed in the composite materials than the unreinforced aluminium compacts. An increase in Al
2
O
3
content led to a decrease in wear rate of composites under the applied load of 5-35 N and a range of sliding velocity from 0·25 to 1·5 m s
-1
. The reasons for improvement in strength and wear behaviour of composite materials are discussed in light of their microstructural features.</description><subject>Applied sciences</subject><subject>Dispersion hardening metals</subject><subject>Exact sciences and technology</subject><subject>Metals. Metallurgy</subject><subject>Powder metallurgy. Composite materials</subject><subject>Production techniques</subject><issn>0032-5899</issn><issn>1743-2901</issn><fulltext>true</fulltext><rsrctype>article</rsrctype><creationdate>2003</creationdate><recordtype>article</recordtype><recordid>eNqN0U1LAzEQBuAgCtbqH_C0F72tnSSbbHIQKcUvqNSDnkM2m21TtpuabJH-e1NaT4L0kiHwvMkwg9A1hjuMSzkCoIQJmU7CAARj9AQNcFnQnEjAp2iwA3kS8hxdxLiEdGdCDNDD-1u2Dt7YGF03z3yTjdt83JIZzYxfrX10vY2Z7uqsX1gXMrPQQZveBhd173x3ic4a3UZ7dahD9Pn0-DF5yaez59fJeJo7WkKfl2VTVrKwXJNaVHUF0lQcA1jKBaelBVMBKXCBqbAVbiTYghOCk9W8hprTIbrdv5ua_drY2KuVi8a2re6s30RFSkmEFOw4yDk5CjLKIMGbA9TR6LYJujMuqnVwKx22CjNSpN53brR3Uc-tWvpN6NJEFAa1W5H6u6KUuN8nXNf4sNLfPrS16vW29eH3G_pP_gei2ZO5</recordid><startdate>2003</startdate><enddate>2003</enddate><creator>Soma Raju, K.</creator><creator>Bhanu Prasad, V. V.</creator><creator>Rudrakshi, G. B.</creator><creator>Ojha, S. N.</creator><general>Taylor & Francis</general><general>SAGE Publications</general><general>Maney</general><scope>IQODW</scope><scope>7QF</scope><scope>8BQ</scope><scope>8FD</scope><scope>JG9</scope><scope>7QQ</scope></search><sort><creationdate>2003</creationdate><title>PM processing of Al-Al2O3 composites and their characterisation</title><author>Soma Raju, K. ; Bhanu Prasad, V. V. ; Rudrakshi, G. B. ; Ojha, S. N.</author></sort><facets><frbrtype>5</frbrtype><frbrgroupid>cdi_FETCH-LOGICAL-i370t-77f7b94e6a2d8bdb09cb6100e368637e0cb02414138eb1f90e46221d8ba6d0d63</frbrgroupid><rsrctype>articles</rsrctype><prefilter>articles</prefilter><language>eng</language><creationdate>2003</creationdate><topic>Applied sciences</topic><topic>Dispersion hardening metals</topic><topic>Exact sciences and technology</topic><topic>Metals. Metallurgy</topic><topic>Powder metallurgy. Composite materials</topic><topic>Production techniques</topic><toplevel>peer_reviewed</toplevel><toplevel>online_resources</toplevel><creatorcontrib>Soma Raju, K.</creatorcontrib><creatorcontrib>Bhanu Prasad, V. V.</creatorcontrib><creatorcontrib>Rudrakshi, G. B.</creatorcontrib><creatorcontrib>Ojha, S. N.</creatorcontrib><collection>Pascal-Francis</collection><collection>Aluminium Industry Abstracts</collection><collection>METADEX</collection><collection>Technology Research Database</collection><collection>Materials Research Database</collection><collection>Ceramic Abstracts</collection><jtitle>Powder metallurgy</jtitle></facets><delivery><delcategory>Remote Search Resource</delcategory><fulltext>fulltext</fulltext></delivery><addata><au>Soma Raju, K.</au><au>Bhanu Prasad, V. V.</au><au>Rudrakshi, G. B.</au><au>Ojha, S. N.</au><au>WCA</au><format>journal</format><genre>article</genre><ristype>JOUR</ristype><atitle>PM processing of Al-Al2O3 composites and their characterisation</atitle><jtitle>Powder metallurgy</jtitle><date>2003</date><risdate>2003</risdate><volume>46</volume><issue>3</issue><spage>219</spage><epage>223</epage><pages>219-223</pages><issn>0032-5899</issn><eissn>1743-2901</eissn><coden>PWMTAU</coden><abstract>Aluminium based composites containing 5 to 20 vol.-%Al
2
O
3
as the reinforcing phase were synthesised by powder metallurgy. The process consisted of blending aluminium powder with Al
2
O
3
powder followed by hot compaction and hot extrusion. The microstructural features, mechanical properties and wear characteristics of the composites were investigated with variation in volume fraction of Al
2
O
3
phase. The results indicated a continuous increase in yield and ultimate tensile strength with a marked decrease in ductility of the composites arising from increased Al
2
O
3
content. High temperature tensile test data revealed that the strength of the base material Al and composite materials containing 5 and 15%Al
2
O
3
decreased with increase in temperature. However, the rate of strength reduction was higher for the extruded compact of unreinforced aluminium than the composites. Lower wear rates were observed in the composite materials than the unreinforced aluminium compacts. An increase in Al
2
O
3
content led to a decrease in wear rate of composites under the applied load of 5-35 N and a range of sliding velocity from 0·25 to 1·5 m s
-1
. The reasons for improvement in strength and wear behaviour of composite materials are discussed in light of their microstructural features.</abstract><cop>London, England</cop><pub>Taylor & Francis</pub><doi>10.1179/003258903225008553</doi><tpages>5</tpages></addata></record> |
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| ispartof | Powder metallurgy, 2003, Vol.46 (3), p.219-223 |
| issn | 0032-5899 1743-2901 |
| language | eng |
| recordid | cdi_proquest_miscellaneous_27925350 |
| source | SAGE Complete |
| subjects | Applied sciences Dispersion hardening metals Exact sciences and technology Metals. Metallurgy Powder metallurgy. Composite materials Production techniques |
| title | PM processing of Al-Al2O3 composites and their characterisation |
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