Formation and characterization of an Al‐rich metastable phase in the Al–B phase diagram
Vacuum heat treatment of mechanically alloyed powders of boron and aluminium leads to the formation of a metastable Al‐rich phase, which can be quenched. Its structure, composition and thermal stability are established. With the chemical formula Al1.28B the rhombohedral phase is unusually rich in Al...
Gespeichert in:
| Veröffentlicht in: | Journal of applied crystallography 2021-08, Vol.54 (4), p.1121-1126 |
|---|---|
| Hauptverfasser: | , , , , , |
| Format: | Artikel |
| Sprache: | eng |
| Schlagworte: | |
| Online-Zugang: | Volltext |
| Tags: |
Tag hinzufügen
Keine Tags, Fügen Sie den ersten Tag hinzu!
|
| container_end_page | 1126 |
|---|---|
| container_issue | 4 |
| container_start_page | 1121 |
| container_title | Journal of applied crystallography |
| container_volume | 54 |
| creator | Malkin, Alexander I. Chernyshev, Vladimir V. Ryazantseva, Alena A. Vasiliev, Alexander L. Nickolsky, Maximilian S. Shiryaev, Andrei A. |
| description | Vacuum heat treatment of mechanically alloyed powders of boron and aluminium leads to the formation of a metastable Al‐rich phase, which can be quenched. Its structure, composition and thermal stability are established. With the chemical formula Al1.28B the rhombohedral phase is unusually rich in Al. The parameters of the unit cell determined from X‐ray powder diffraction are a = 18.3464 (19), c = 8.9241 (9) Å, V = 2601.3 (6) Å3, space group R3. It is stable on heating to 630°C. It is suggested that this phase is an important intermediate step in the formation of AlB2 and, eventually, of other borides; its nucleation and thermal stability are explained by high elastic energy hindering the formation of equilibrium phases at low temperatures.
A new metastable Al‐rich phase (chemical formula Al1.28B) stable up to 630°C is synthesized by vacuum heating of mechanically alloyed Al and B powders. Its structure is solved from X‐ray powder diffraction. |
| doi_str_mv | 10.1107/S1600576721005756 |
| format | Article |
| fullrecord | <record><control><sourceid>proquest_cross</sourceid><recordid>TN_cdi_proquest_journals_2558017095</recordid><sourceformat>XML</sourceformat><sourcesystem>PC</sourcesystem><sourcerecordid>2558017095</sourcerecordid><originalsourceid>FETCH-LOGICAL-c3231-ae3da5cfc5c20bf4f9f541e7874fb787b859a44d76b1a26c296067c1e1722da83</originalsourceid><addsrcrecordid>eNqFkM9Kw0AQxhdRsFYfwNuC5-jOJptNjrVYtRQE_5w8hMlm16TkT91NKfXkIwi-oU9iYnoQPHiZb_jxfTPMEHIK7ByAyYsHCBkTMpQcehXhHhn1yOvZ_q_-kBw5t2QMOisfkedZYytsi6amWGdU5WhRtdoWbwNsTMfppPx6_7CFymmlW3QtpqWmqxydpkVN21z_OD4vdywr8MVidUwODJZOn-x0TJ5mV4_TG29xd307nSw85XMfPNR-hkIZJRRnqQlMbEQAWkYyMGlX00jEGASZDFNAHioehyyUCjR0F2QY-WNyNsxd2eZ1rV2bLJu1rbuVCRciYiBZLDoXDC5lG-esNsnKFhXabQIs6X-Y_Plhl4mHzKYo9fb_QDKf3vP5QjAO_jfX4nVL</addsrcrecordid><sourcetype>Aggregation Database</sourcetype><iscdi>true</iscdi><recordtype>article</recordtype><pqid>2558017095</pqid></control><display><type>article</type><title>Formation and characterization of an Al‐rich metastable phase in the Al–B phase diagram</title><source>Access via Wiley Online Library</source><source>Alma/SFX Local Collection</source><creator>Malkin, Alexander I. ; Chernyshev, Vladimir V. ; Ryazantseva, Alena A. ; Vasiliev, Alexander L. ; Nickolsky, Maximilian S. ; Shiryaev, Andrei A.</creator><creatorcontrib>Malkin, Alexander I. ; Chernyshev, Vladimir V. ; Ryazantseva, Alena A. ; Vasiliev, Alexander L. ; Nickolsky, Maximilian S. ; Shiryaev, Andrei A.</creatorcontrib><description>Vacuum heat treatment of mechanically alloyed powders of boron and aluminium leads to the formation of a metastable Al‐rich phase, which can be quenched. Its structure, composition and thermal stability are established. With the chemical formula Al1.28B the rhombohedral phase is unusually rich in Al. The parameters of the unit cell determined from X‐ray powder diffraction are a = 18.3464 (19), c = 8.9241 (9) Å, V = 2601.3 (6) Å3, space group R3. It is stable on heating to 630°C. It is suggested that this phase is an important intermediate step in the formation of AlB2 and, eventually, of other borides; its nucleation and thermal stability are explained by high elastic energy hindering the formation of equilibrium phases at low temperatures.
A new metastable Al‐rich phase (chemical formula Al1.28B) stable up to 630°C is synthesized by vacuum heating of mechanically alloyed Al and B powders. Its structure is solved from X‐ray powder diffraction.</description><identifier>ISSN: 1600-5767</identifier><identifier>ISSN: 0021-8898</identifier><identifier>EISSN: 1600-5767</identifier><identifier>DOI: 10.1107/S1600576721005756</identifier><language>eng</language><publisher>5 Abbey Square, Chester, Cheshire CH1 2HU, England: International Union of Crystallography</publisher><subject>Alloy powders ; alloys ; Aluminum ; Borides ; Boron ; diffusion ; Heat treatment ; Heat treatments ; intermetallics ; Low temperature ; Mechanical alloying ; metals ; Metastable phases ; Nucleation ; Phase diagrams ; phase transitions ; Thermal stability ; Unit cell ; X‐ray diffraction</subject><ispartof>Journal of applied crystallography, 2021-08, Vol.54 (4), p.1121-1126</ispartof><rights>2021 Alexander I. Malkin et al. published by IUCr Journals.</rights><rights>Copyright Blackwell Publishing Ltd. Aug 2021</rights><lds50>peer_reviewed</lds50><woscitedreferencessubscribed>false</woscitedreferencessubscribed><citedby>FETCH-LOGICAL-c3231-ae3da5cfc5c20bf4f9f541e7874fb787b859a44d76b1a26c296067c1e1722da83</citedby><cites>FETCH-LOGICAL-c3231-ae3da5cfc5c20bf4f9f541e7874fb787b859a44d76b1a26c296067c1e1722da83</cites><orcidid>0000-0001-7884-4180 ; 0000-0002-3191-357X ; 0000-0001-8085-7116 ; 0000-0001-8514-7471</orcidid></display><links><openurl>$$Topenurl_article</openurl><openurlfulltext>$$Topenurlfull_article</openurlfulltext><thumbnail>$$Tsyndetics_thumb_exl</thumbnail><linktopdf>$$Uhttps://onlinelibrary.wiley.com/doi/pdf/10.1107%2FS1600576721005756$$EPDF$$P50$$Gwiley$$H</linktopdf><linktohtml>$$Uhttps://onlinelibrary.wiley.com/doi/full/10.1107%2FS1600576721005756$$EHTML$$P50$$Gwiley$$H</linktohtml><link.rule.ids>314,780,784,1417,27924,27925,45574,45575</link.rule.ids></links><search><creatorcontrib>Malkin, Alexander I.</creatorcontrib><creatorcontrib>Chernyshev, Vladimir V.</creatorcontrib><creatorcontrib>Ryazantseva, Alena A.</creatorcontrib><creatorcontrib>Vasiliev, Alexander L.</creatorcontrib><creatorcontrib>Nickolsky, Maximilian S.</creatorcontrib><creatorcontrib>Shiryaev, Andrei A.</creatorcontrib><title>Formation and characterization of an Al‐rich metastable phase in the Al–B phase diagram</title><title>Journal of applied crystallography</title><description>Vacuum heat treatment of mechanically alloyed powders of boron and aluminium leads to the formation of a metastable Al‐rich phase, which can be quenched. Its structure, composition and thermal stability are established. With the chemical formula Al1.28B the rhombohedral phase is unusually rich in Al. The parameters of the unit cell determined from X‐ray powder diffraction are a = 18.3464 (19), c = 8.9241 (9) Å, V = 2601.3 (6) Å3, space group R3. It is stable on heating to 630°C. It is suggested that this phase is an important intermediate step in the formation of AlB2 and, eventually, of other borides; its nucleation and thermal stability are explained by high elastic energy hindering the formation of equilibrium phases at low temperatures.
A new metastable Al‐rich phase (chemical formula Al1.28B) stable up to 630°C is synthesized by vacuum heating of mechanically alloyed Al and B powders. Its structure is solved from X‐ray powder diffraction.</description><subject>Alloy powders</subject><subject>alloys</subject><subject>Aluminum</subject><subject>Borides</subject><subject>Boron</subject><subject>diffusion</subject><subject>Heat treatment</subject><subject>Heat treatments</subject><subject>intermetallics</subject><subject>Low temperature</subject><subject>Mechanical alloying</subject><subject>metals</subject><subject>Metastable phases</subject><subject>Nucleation</subject><subject>Phase diagrams</subject><subject>phase transitions</subject><subject>Thermal stability</subject><subject>Unit cell</subject><subject>X‐ray diffraction</subject><issn>1600-5767</issn><issn>0021-8898</issn><issn>1600-5767</issn><fulltext>true</fulltext><rsrctype>article</rsrctype><creationdate>2021</creationdate><recordtype>article</recordtype><recordid>eNqFkM9Kw0AQxhdRsFYfwNuC5-jOJptNjrVYtRQE_5w8hMlm16TkT91NKfXkIwi-oU9iYnoQPHiZb_jxfTPMEHIK7ByAyYsHCBkTMpQcehXhHhn1yOvZ_q_-kBw5t2QMOisfkedZYytsi6amWGdU5WhRtdoWbwNsTMfppPx6_7CFymmlW3QtpqWmqxydpkVN21z_OD4vdywr8MVidUwODJZOn-x0TJ5mV4_TG29xd307nSw85XMfPNR-hkIZJRRnqQlMbEQAWkYyMGlX00jEGASZDFNAHioehyyUCjR0F2QY-WNyNsxd2eZ1rV2bLJu1rbuVCRciYiBZLDoXDC5lG-esNsnKFhXabQIs6X-Y_Plhl4mHzKYo9fb_QDKf3vP5QjAO_jfX4nVL</recordid><startdate>202108</startdate><enddate>202108</enddate><creator>Malkin, Alexander I.</creator><creator>Chernyshev, Vladimir V.</creator><creator>Ryazantseva, Alena A.</creator><creator>Vasiliev, Alexander L.</creator><creator>Nickolsky, Maximilian S.</creator><creator>Shiryaev, Andrei A.</creator><general>International Union of Crystallography</general><general>Blackwell Publishing Ltd</general><scope>AAYXX</scope><scope>CITATION</scope><scope>7SR</scope><scope>7U5</scope><scope>8BQ</scope><scope>8FD</scope><scope>JG9</scope><scope>L7M</scope><orcidid>https://orcid.org/0000-0001-7884-4180</orcidid><orcidid>https://orcid.org/0000-0002-3191-357X</orcidid><orcidid>https://orcid.org/0000-0001-8085-7116</orcidid><orcidid>https://orcid.org/0000-0001-8514-7471</orcidid></search><sort><creationdate>202108</creationdate><title>Formation and characterization of an Al‐rich metastable phase in the Al–B phase diagram</title><author>Malkin, Alexander I. ; Chernyshev, Vladimir V. ; Ryazantseva, Alena A. ; Vasiliev, Alexander L. ; Nickolsky, Maximilian S. ; Shiryaev, Andrei A.</author></sort><facets><frbrtype>5</frbrtype><frbrgroupid>cdi_FETCH-LOGICAL-c3231-ae3da5cfc5c20bf4f9f541e7874fb787b859a44d76b1a26c296067c1e1722da83</frbrgroupid><rsrctype>articles</rsrctype><prefilter>articles</prefilter><language>eng</language><creationdate>2021</creationdate><topic>Alloy powders</topic><topic>alloys</topic><topic>Aluminum</topic><topic>Borides</topic><topic>Boron</topic><topic>diffusion</topic><topic>Heat treatment</topic><topic>Heat treatments</topic><topic>intermetallics</topic><topic>Low temperature</topic><topic>Mechanical alloying</topic><topic>metals</topic><topic>Metastable phases</topic><topic>Nucleation</topic><topic>Phase diagrams</topic><topic>phase transitions</topic><topic>Thermal stability</topic><topic>Unit cell</topic><topic>X‐ray diffraction</topic><toplevel>peer_reviewed</toplevel><toplevel>online_resources</toplevel><creatorcontrib>Malkin, Alexander I.</creatorcontrib><creatorcontrib>Chernyshev, Vladimir V.</creatorcontrib><creatorcontrib>Ryazantseva, Alena A.</creatorcontrib><creatorcontrib>Vasiliev, Alexander L.</creatorcontrib><creatorcontrib>Nickolsky, Maximilian S.</creatorcontrib><creatorcontrib>Shiryaev, Andrei A.</creatorcontrib><collection>CrossRef</collection><collection>Engineered Materials Abstracts</collection><collection>Solid State and Superconductivity Abstracts</collection><collection>METADEX</collection><collection>Technology Research Database</collection><collection>Materials Research Database</collection><collection>Advanced Technologies Database with Aerospace</collection><jtitle>Journal of applied crystallography</jtitle></facets><delivery><delcategory>Remote Search Resource</delcategory><fulltext>fulltext</fulltext></delivery><addata><au>Malkin, Alexander I.</au><au>Chernyshev, Vladimir V.</au><au>Ryazantseva, Alena A.</au><au>Vasiliev, Alexander L.</au><au>Nickolsky, Maximilian S.</au><au>Shiryaev, Andrei A.</au><format>journal</format><genre>article</genre><ristype>JOUR</ristype><atitle>Formation and characterization of an Al‐rich metastable phase in the Al–B phase diagram</atitle><jtitle>Journal of applied crystallography</jtitle><date>2021-08</date><risdate>2021</risdate><volume>54</volume><issue>4</issue><spage>1121</spage><epage>1126</epage><pages>1121-1126</pages><issn>1600-5767</issn><issn>0021-8898</issn><eissn>1600-5767</eissn><abstract>Vacuum heat treatment of mechanically alloyed powders of boron and aluminium leads to the formation of a metastable Al‐rich phase, which can be quenched. Its structure, composition and thermal stability are established. With the chemical formula Al1.28B the rhombohedral phase is unusually rich in Al. The parameters of the unit cell determined from X‐ray powder diffraction are a = 18.3464 (19), c = 8.9241 (9) Å, V = 2601.3 (6) Å3, space group R3. It is stable on heating to 630°C. It is suggested that this phase is an important intermediate step in the formation of AlB2 and, eventually, of other borides; its nucleation and thermal stability are explained by high elastic energy hindering the formation of equilibrium phases at low temperatures.
A new metastable Al‐rich phase (chemical formula Al1.28B) stable up to 630°C is synthesized by vacuum heating of mechanically alloyed Al and B powders. Its structure is solved from X‐ray powder diffraction.</abstract><cop>5 Abbey Square, Chester, Cheshire CH1 2HU, England</cop><pub>International Union of Crystallography</pub><doi>10.1107/S1600576721005756</doi><tpages>6</tpages><orcidid>https://orcid.org/0000-0001-7884-4180</orcidid><orcidid>https://orcid.org/0000-0002-3191-357X</orcidid><orcidid>https://orcid.org/0000-0001-8085-7116</orcidid><orcidid>https://orcid.org/0000-0001-8514-7471</orcidid></addata></record> |
| fulltext | fulltext |
| identifier | ISSN: 1600-5767 |
| ispartof | Journal of applied crystallography, 2021-08, Vol.54 (4), p.1121-1126 |
| issn | 1600-5767 0021-8898 1600-5767 |
| language | eng |
| recordid | cdi_proquest_journals_2558017095 |
| source | Access via Wiley Online Library; Alma/SFX Local Collection |
| subjects | Alloy powders alloys Aluminum Borides Boron diffusion Heat treatment Heat treatments intermetallics Low temperature Mechanical alloying metals Metastable phases Nucleation Phase diagrams phase transitions Thermal stability Unit cell X‐ray diffraction |
| title | Formation and characterization of an Al‐rich metastable phase in the Al–B phase diagram |
| url | https://sfx.bib-bvb.de/sfx_tum?ctx_ver=Z39.88-2004&ctx_enc=info:ofi/enc:UTF-8&ctx_tim=2024-12-18T17%3A01%3A11IST&url_ver=Z39.88-2004&url_ctx_fmt=infofi/fmt:kev:mtx:ctx&rfr_id=info:sid/primo.exlibrisgroup.com:primo3-Article-proquest_cross&rft_val_fmt=info:ofi/fmt:kev:mtx:journal&rft.genre=article&rft.atitle=Formation%20and%20characterization%20of%20an%20Al%E2%80%90rich%20metastable%20phase%20in%20the%20Al%E2%80%93B%20phase%20diagram&rft.jtitle=Journal%20of%20applied%20crystallography&rft.au=Malkin,%20Alexander%20I.&rft.date=2021-08&rft.volume=54&rft.issue=4&rft.spage=1121&rft.epage=1126&rft.pages=1121-1126&rft.issn=1600-5767&rft.eissn=1600-5767&rft_id=info:doi/10.1107/S1600576721005756&rft_dat=%3Cproquest_cross%3E2558017095%3C/proquest_cross%3E%3Curl%3E%3C/url%3E&disable_directlink=true&sfx.directlink=off&sfx.report_link=0&rft_id=info:oai/&rft_pqid=2558017095&rft_id=info:pmid/&rfr_iscdi=true |