Research on residual stress inside Fe-Mn-Si shape memory alloy coating by laser cladding processing
| Autor: | Zhi-jie Liu, Cheng-xin Lin, Heng Ju, Jia-qi Zhang |
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| Rok vydání: | 2016 |
| Předmět: |
Cladding (metalworking)
Diffraction Materials science 02 engineering and technology Shape-memory alloy engineering.material 021001 nanoscience & nanotechnology Condensed Matter Physics Laser SMA Atomic and Molecular Physics and Optics Electronic Optical and Magnetic Materials law.invention 020303 mechanical engineering & transports 0203 mechanical engineering Coating law Residual stress Martensite engineering Electrical and Electronic Engineering Composite material 0210 nano-technology |
| Zdroj: | Optoelectronics Letters. 12:344-348 |
| ISSN: | 1993-5013 1673-1905 |
| DOI: | 10.1007/s11801-016-6131-1 |
| Popis: | The stainless Fe-Mn-Si shape memory alloy (SMA) coating was prepared on the surface of AISI 304 stainless steel. The principal residual stress measured by the mechanical hole-drilling method indicates that the Fe-Mn-Si SMA cladding specimen possesses a lower residual stress compared with the 304 stainless steel cladding specimen. The mean stress values of the former and the latter on 10-mm-thick substrate are 4.751 MPa and 7.399 MPa, respectively. What’s more, their deformation values on 2-mm-thick substrate are about 0° and 15°, respectively. Meanwhile, the variation trend and the value of the residual stress simulated by the ANSYS finite element software consist with experimental results. The X-ray diffraction (XRD) pattern shows e-martensite exists in Fe-Mn-Si SMA coating, which verifies the mechanism of low residual stress. That’s the γ→e martensite phase transformation, which relaxes the residual stress of the specimen and reduces its deformation in the laser cladding processing. |
| Databáze: | OpenAIRE |
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