Effect of Cold Pressing and Aging on Reduction and Evolution of Quenched Residual Stress for Al-Zn-Mg-Cu T-Type Rib
The preparation of the Al-Zn-Mg-Cu T-type rib consisted of forging, quenching, cold pressing, aging and the final machining processes, and the evolution of residual stress played a significant role in its properties and accuracy. Numerical models were established to investigate the evolution and dis...
| Main Authors: | , , , |
|---|---|
| Format: | Article |
| Language: | English |
| Published: |
MDPI AG
2021-06-01
|
| Series: | Applied Sciences |
| Subjects: | |
| Online Access: | https://www.mdpi.com/2076-3417/11/12/5439 |
| _version_ | 1797530470650478592 |
|---|---|
| author | Yaoqiong Liu Tao Zhang Hai Gong Yunxin Wu |
| author_facet | Yaoqiong Liu Tao Zhang Hai Gong Yunxin Wu |
| author_sort | Yaoqiong Liu |
| collection | DOAJ |
| description | The preparation of the Al-Zn-Mg-Cu T-type rib consisted of forging, quenching, cold pressing, aging and the final machining processes, and the evolution of residual stress played a significant role in its properties and accuracy. Numerical models were established to investigate the evolution and distribution of residual stress for the T-type rib during the quenching and cold pressing processes. The results showed that the distribution of residual stress at the stiffened area is asymmetrical, which is different from the symmetrical distribution at the smooth area. The cold pressing is beneficial for the reduction of residual stress. The stepwise cold pressing resulted in the heterogeneous distribution of residual stress at the stiffened area and the overlap region. Three comparative T-type ribs were conducted, and their residual stresses were measured using X-ray diffraction and the contour method. A stress reduction of 50% can be obtained at the surfaces of the T-type rib through cold pressing followed by the aging process. The reduction of the maximum tensile stress at the stiffened area of the T-type rib was 42% and 50% for the cold pressing and aging, respectively, which increased to 54% and 60% at the smooth area. The mechanism of the stress reduction during the cold pressing and the aging processes was discussed. |
| first_indexed | 2024-03-10T10:29:28Z |
| format | Article |
| id | doaj.art-969b10727a614a56bde8db671a8d6eb5 |
| institution | Directory Open Access Journal |
| issn | 2076-3417 |
| language | English |
| last_indexed | 2024-03-10T10:29:28Z |
| publishDate | 2021-06-01 |
| publisher | MDPI AG |
| record_format | Article |
| series | Applied Sciences |
| spelling | doaj.art-969b10727a614a56bde8db671a8d6eb52023-11-21T23:45:47ZengMDPI AGApplied Sciences2076-34172021-06-011112543910.3390/app11125439Effect of Cold Pressing and Aging on Reduction and Evolution of Quenched Residual Stress for Al-Zn-Mg-Cu T-Type RibYaoqiong Liu0Tao Zhang1Hai Gong2Yunxin Wu3Light Alloy Research Institute, Central South University, Changsha 410083, ChinaLight Alloy Research Institute, Central South University, Changsha 410083, ChinaLight Alloy Research Institute, Central South University, Changsha 410083, ChinaLight Alloy Research Institute, Central South University, Changsha 410083, ChinaThe preparation of the Al-Zn-Mg-Cu T-type rib consisted of forging, quenching, cold pressing, aging and the final machining processes, and the evolution of residual stress played a significant role in its properties and accuracy. Numerical models were established to investigate the evolution and distribution of residual stress for the T-type rib during the quenching and cold pressing processes. The results showed that the distribution of residual stress at the stiffened area is asymmetrical, which is different from the symmetrical distribution at the smooth area. The cold pressing is beneficial for the reduction of residual stress. The stepwise cold pressing resulted in the heterogeneous distribution of residual stress at the stiffened area and the overlap region. Three comparative T-type ribs were conducted, and their residual stresses were measured using X-ray diffraction and the contour method. A stress reduction of 50% can be obtained at the surfaces of the T-type rib through cold pressing followed by the aging process. The reduction of the maximum tensile stress at the stiffened area of the T-type rib was 42% and 50% for the cold pressing and aging, respectively, which increased to 54% and 60% at the smooth area. The mechanism of the stress reduction during the cold pressing and the aging processes was discussed.https://www.mdpi.com/2076-3417/11/12/5439T-type ribresidual stressquenchingcold pressingartificial agingstress reduction mechanism |
| spellingShingle | Yaoqiong Liu Tao Zhang Hai Gong Yunxin Wu Effect of Cold Pressing and Aging on Reduction and Evolution of Quenched Residual Stress for Al-Zn-Mg-Cu T-Type Rib Applied Sciences T-type rib residual stress quenching cold pressing artificial aging stress reduction mechanism |
| title | Effect of Cold Pressing and Aging on Reduction and Evolution of Quenched Residual Stress for Al-Zn-Mg-Cu T-Type Rib |
| title_full | Effect of Cold Pressing and Aging on Reduction and Evolution of Quenched Residual Stress for Al-Zn-Mg-Cu T-Type Rib |
| title_fullStr | Effect of Cold Pressing and Aging on Reduction and Evolution of Quenched Residual Stress for Al-Zn-Mg-Cu T-Type Rib |
| title_full_unstemmed | Effect of Cold Pressing and Aging on Reduction and Evolution of Quenched Residual Stress for Al-Zn-Mg-Cu T-Type Rib |
| title_short | Effect of Cold Pressing and Aging on Reduction and Evolution of Quenched Residual Stress for Al-Zn-Mg-Cu T-Type Rib |
| title_sort | effect of cold pressing and aging on reduction and evolution of quenched residual stress for al zn mg cu t type rib |
| topic | T-type rib residual stress quenching cold pressing artificial aging stress reduction mechanism |
| url | https://www.mdpi.com/2076-3417/11/12/5439 |
| work_keys_str_mv | AT yaoqiongliu effectofcoldpressingandagingonreductionandevolutionofquenchedresidualstressforalznmgcuttyperib AT taozhang effectofcoldpressingandagingonreductionandevolutionofquenchedresidualstressforalznmgcuttyperib AT haigong effectofcoldpressingandagingonreductionandevolutionofquenchedresidualstressforalznmgcuttyperib AT yunxinwu effectofcoldpressingandagingonreductionandevolutionofquenchedresidualstressforalznmgcuttyperib |