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Open AccessArticle

Effect of Heating Process on Microstructure and Properties of 2205/Q235B Composite Interface

1
School of Materials Science and Engineering, Tianjin University, Tianjin 300350, China
2
Tianjin Key Laboratory of Advanced Joining Technology, Tianjin Univesity, Tianjin 300350, China
3
Shandong High-Tech Investment Corporation, Jinan 250101, China
4
Shandong Iron & Steel Group Co., LTD, Jinan250101, China
*
Author to whom correspondence should be addressed.
Metals 2019, 9(10), 1027; https://doi.org/10.3390/met9101027
Received: 23 August 2019 / Revised: 13 September 2019 / Accepted: 16 September 2019 / Published: 22 September 2019
In this paper, the influence of heating process parameters on interface characteristics and mechanical properties of 2205/Q235B clad steel plate was systematically studied. The results showed that the interfacial gap of the 2205/Q235B composite blank was completely bonded by the mutual diffusion of elements under the action of temperature and metallurgical bonding is achieved. The shear strength of the air-cooled samples was only 114–132 MPa, which was far lower than that of water-quenched samples and rolling deformation samples and was unable to meet the requirements of engineering applications. With the increase in heating temperature and holding time, the diffusion distance of the Cr element gradually increased. After rolling deformation, the diffusion distance of the Cr element was significantly reduced to 4.1–10.2 μm. Rolling deformation of the specimen in the decarburization showed the lowest microhardness, and in combination with the microhardness of the interface is about 236–256 HV, which is between the hardness of Q235B and 2205. The 2205 stainless-steel shows the lowest corrosion rate and the best corrosion resistance when rolling at 1200 °C. It was found that the corrosion was the most significant in the side of Q235B near the bonding zone. The corrosion pit width increased gradually with increased heating temperature. View Full-Text
Keywords: heating temperature; heat-up time; 2205/Q235B; interface; shear strength heating temperature; heat-up time; 2205/Q235B; interface; shear strength
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Xiao, F.; Wang, D.; Gao, Z.; Zhou, L. Effect of Heating Process on Microstructure and Properties of 2205/Q235B Composite Interface. Metals 2019, 9, 1027.

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