Enhancement of Mechanical Properties and Rolling Formability in AZ91 Alloy by RD-ECAP Processing
In this study, the influence of rotary-die equal channel angular pressing (RD-ECAP) processing on the mechanical properties and rolling formability of AZ91 alloys was investigated. The as-cast and pre-homogenized AZ91 alloys were pre-processed by RD-ECAP for 16 passes at 573 K and subjected to post-...
| Main Authors: | , , , , , , |
|---|---|
| Format: | Article |
| Language: | English |
| Published: |
MDPI AG
2019-10-01
|
| Series: | Materials |
| Subjects: | |
| Online Access: | https://www.mdpi.com/1996-1944/12/21/3503 |
| _version_ | 1811195585690075136 |
|---|---|
| author | Qiong Xu Aibin Ma Yuhua Li Bassiouny Saleh Yuchun Yuan Jinghua Jiang Chaoying Ni |
| author_facet | Qiong Xu Aibin Ma Yuhua Li Bassiouny Saleh Yuchun Yuan Jinghua Jiang Chaoying Ni |
| author_sort | Qiong Xu |
| collection | DOAJ |
| description | In this study, the influence of rotary-die equal channel angular pressing (RD-ECAP) processing on the mechanical properties and rolling formability of AZ91 alloys was investigated. The as-cast and pre-homogenized AZ91 alloys were pre-processed by RD-ECAP for 16 passes at 573 K and subjected to post-ECAP rolling at 573 K with a rolling speed of 10 m/min. The microstructure and deformation characteristics of the AZ91 alloys were characterized. Results demonstrated that fine-grained AZ91 alloys with improved strength and ductility were obtained via the high-pass RD-ECAP processing, indicating a good plastic formability. The ECAP-ed alloys were easily rolled at 573 K from 4.5 mm to 1.1 mm in thickness without edge cracking. After rolling, heterogeneous grain structures were observed with large numbers of twins and shear bands that created strong basal textures. The rolled AZ91 alloys exhibited higher tensile strength and appropriate elongation. The post-ECAP rolling was successfully used in the high productivity of AZ91 rolled plates with good mechanical properties. |
| first_indexed | 2024-04-12T00:45:39Z |
| format | Article |
| id | doaj.art-0a23d1c7796843d08a0595867a45451d |
| institution | Directory Open Access Journal |
| issn | 1996-1944 |
| language | English |
| last_indexed | 2024-04-12T00:45:39Z |
| publishDate | 2019-10-01 |
| publisher | MDPI AG |
| record_format | Article |
| series | Materials |
| spelling | doaj.art-0a23d1c7796843d08a0595867a45451d2022-12-22T03:54:53ZengMDPI AGMaterials1996-19442019-10-011221350310.3390/ma12213503ma12213503Enhancement of Mechanical Properties and Rolling Formability in AZ91 Alloy by RD-ECAP ProcessingQiong Xu0Aibin Ma1Yuhua Li2Bassiouny Saleh3Yuchun Yuan4Jinghua Jiang5Chaoying Ni6College of Mechanics and Materials, Hohai University, Nanjing 211100, ChinaCollege of Mechanics and Materials, Hohai University, Nanjing 211100, ChinaCollege of Mechanics and Materials, Hohai University, Nanjing 211100, ChinaCollege of Mechanics and Materials, Hohai University, Nanjing 211100, ChinaCollege of Mechanics and Materials, Hohai University, Nanjing 211100, ChinaCollege of Mechanics and Materials, Hohai University, Nanjing 211100, ChinaDepartment of Materials Science & Engineering, University of Delaware, Newark, DE 19716, USAIn this study, the influence of rotary-die equal channel angular pressing (RD-ECAP) processing on the mechanical properties and rolling formability of AZ91 alloys was investigated. The as-cast and pre-homogenized AZ91 alloys were pre-processed by RD-ECAP for 16 passes at 573 K and subjected to post-ECAP rolling at 573 K with a rolling speed of 10 m/min. The microstructure and deformation characteristics of the AZ91 alloys were characterized. Results demonstrated that fine-grained AZ91 alloys with improved strength and ductility were obtained via the high-pass RD-ECAP processing, indicating a good plastic formability. The ECAP-ed alloys were easily rolled at 573 K from 4.5 mm to 1.1 mm in thickness without edge cracking. After rolling, heterogeneous grain structures were observed with large numbers of twins and shear bands that created strong basal textures. The rolled AZ91 alloys exhibited higher tensile strength and appropriate elongation. The post-ECAP rolling was successfully used in the high productivity of AZ91 rolled plates with good mechanical properties.https://www.mdpi.com/1996-1944/12/21/3503az91 alloyrd-ecap processingpost-ecap rollingrolling formabilitymechanical properties |
| spellingShingle | Qiong Xu Aibin Ma Yuhua Li Bassiouny Saleh Yuchun Yuan Jinghua Jiang Chaoying Ni Enhancement of Mechanical Properties and Rolling Formability in AZ91 Alloy by RD-ECAP Processing Materials az91 alloy rd-ecap processing post-ecap rolling rolling formability mechanical properties |
| title | Enhancement of Mechanical Properties and Rolling Formability in AZ91 Alloy by RD-ECAP Processing |
| title_full | Enhancement of Mechanical Properties and Rolling Formability in AZ91 Alloy by RD-ECAP Processing |
| title_fullStr | Enhancement of Mechanical Properties and Rolling Formability in AZ91 Alloy by RD-ECAP Processing |
| title_full_unstemmed | Enhancement of Mechanical Properties and Rolling Formability in AZ91 Alloy by RD-ECAP Processing |
| title_short | Enhancement of Mechanical Properties and Rolling Formability in AZ91 Alloy by RD-ECAP Processing |
| title_sort | enhancement of mechanical properties and rolling formability in az91 alloy by rd ecap processing |
| topic | az91 alloy rd-ecap processing post-ecap rolling rolling formability mechanical properties |
| url | https://www.mdpi.com/1996-1944/12/21/3503 |
| work_keys_str_mv | AT qiongxu enhancementofmechanicalpropertiesandrollingformabilityinaz91alloybyrdecapprocessing AT aibinma enhancementofmechanicalpropertiesandrollingformabilityinaz91alloybyrdecapprocessing AT yuhuali enhancementofmechanicalpropertiesandrollingformabilityinaz91alloybyrdecapprocessing AT bassiounysaleh enhancementofmechanicalpropertiesandrollingformabilityinaz91alloybyrdecapprocessing AT yuchunyuan enhancementofmechanicalpropertiesandrollingformabilityinaz91alloybyrdecapprocessing AT jinghuajiang enhancementofmechanicalpropertiesandrollingformabilityinaz91alloybyrdecapprocessing AT chaoyingni enhancementofmechanicalpropertiesandrollingformabilityinaz91alloybyrdecapprocessing |