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| Content Provider | Springer Nature Link |
|---|---|
| Author | Zhang, Zhiqiang Jing, Hongyang Xu, Lianyong Han, Yongdian Li, Guolu Zhao, Lei |
| Copyright Year | 2016 |
| Abstract | This paper investigated on microstructure and impact toughness of different zones in duplex stainless steel welding joint. High-temperature heat-affected zone (HTHAZ) contained coarse ferrite grains and secondary precipitates such as secondary austenite, Cr$_{2}$N, and sigma. Intergranular secondary austenite was prone to precipitation in low-temperature heat-affected zone (LTHAZ). Both in weld metal (WM) and in HTHAZ, the austenite consisted of different primary and secondary austenite. The ferrite grains in base metal (BM) presented typical rolling texture, while the austenite grains showed random orientation. Both in the HTHAZ and in the LTHAZ, the ferrite grains maintained same texture as the ferrite in the BM. The secondary austenite had higher Ni but lower Cr and Mo than the primary austenite. Furthermore, the WM exhibited the highest toughness because of sufficient ductile austenite and unapparent ferrite texture. The HTHAZ had the lowest toughness because of insufficient austenite formation in addition to brittle sigma and Cr$_{2}$N precipitation. The LTHAZ toughness was higher than the BM due to secondary austenite precipitation. In addition, the WM fracture was dominated by the dimple, while the cleavage was main fracture mode of the HTHAZ. Both BM and LTHAZ exhibited a mixed fracture mode of the dimple and quasi-cleavage. |
| Starting Page | 134 |
| Ending Page | 150 |
| Page Count | 17 |
| File Format | |
| ISSN | 10599495 |
| Journal | Journal of Materials Engineering and Performance |
| Volume Number | 26 |
| Issue Number | 1 |
| e-ISSN | 15441024 |
| Language | English |
| Publisher | Springer US |
| Publisher Date | 2016-11-22 |
| Publisher Place | New York |
| Access Restriction | One Nation One Subscription (ONOS) |
| Subject Keyword | duplex stainless steel fracture microstructure toughness welding Characterization and Evaluation of Materials Tribology, Corrosion and Coatings Quality Control, Reliability, Safety and Risk Engineering Design |
| Content Type | Text |
| Resource Type | Article |
| Subject | Mechanics of Materials Materials Science Mechanical Engineering |
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