In this paper, laser welding of stainless steel and TiNi shape memory alloy dissimilar materials was carried. Microstructures of the joints were analyzed by means of scanning electron microscopy (SEM), energy dispersive spectroscopy (EDS) and X-ray diffraction (XRD). Mechanical properties of the joints were evaluated by tensile tests. Based on avoiding the formation of Ti-Fe intermetallics in the joint, three welding processes for SS-TiNi alloy joint were introduced. The joint A was formed while the laser was acted on the SS-TiNi alloy interface and joint fractured along the SS side in weld immediately after welding without filler metal. The joint B was formed while the laser was acted on the Cu interlayer. Experimental results showed that Cu interlayer was helping to decrease the Ti-Fe intermetallics by forming Ti-Cu phases in the weld. The tensile strength of the joint B was 216 MPa. The joint C was formed while the laser was acted on the SS side 1.0 mm. One process was one pass welding involving creation of a joint with one fusion weld and one brazed weld separated by remaining unmelted SS. The mechanical performance of the joint C was determined by the brazed weld formed at SS-TiNi alloy interface with a tensile strength of 256 MPa.
Published in | International Journal of Mineral Processing and Extractive Metallurgy (Volume 7, Issue 3) |
DOI | 10.11648/j.ijmpem.20220703.12 |
Page(s) | 75-84 |
Creative Commons |
This is an Open Access article, distributed under the terms of the Creative Commons Attribution 4.0 International License (http://creativecommons.org/licenses/by/4.0/), which permits unrestricted use, distribution and reproduction in any medium or format, provided the original work is properly cited. |
Copyright |
Copyright © The Author(s), 2022. Published by Science Publishing Group |
Stainless Steel, TiNi Alloy, Cu Interlayer, Laser Welding, Microstructure, Tensile Strength
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APA Style
Zhijin Guo, Yan Zhang, Jianping Zhou, Daqian Sun, Hongmei Li. (2022). Interfacial Microstructure Evolution and Mechanical Properties of Laser Welding Joints for Stainless Steel to TiNi Shape Memory Alloy. International Journal of Mineral Processing and Extractive Metallurgy, 7(3), 75-84. https://doi.org/10.11648/j.ijmpem.20220703.12
ACS Style
Zhijin Guo; Yan Zhang; Jianping Zhou; Daqian Sun; Hongmei Li. Interfacial Microstructure Evolution and Mechanical Properties of Laser Welding Joints for Stainless Steel to TiNi Shape Memory Alloy. Int. J. Miner. Process. Extr. Metall. 2022, 7(3), 75-84. doi: 10.11648/j.ijmpem.20220703.12
AMA Style
Zhijin Guo, Yan Zhang, Jianping Zhou, Daqian Sun, Hongmei Li. Interfacial Microstructure Evolution and Mechanical Properties of Laser Welding Joints for Stainless Steel to TiNi Shape Memory Alloy. Int J Miner Process Extr Metall. 2022;7(3):75-84. doi: 10.11648/j.ijmpem.20220703.12
@article{10.11648/j.ijmpem.20220703.12, author = {Zhijin Guo and Yan Zhang and Jianping Zhou and Daqian Sun and Hongmei Li}, title = {Interfacial Microstructure Evolution and Mechanical Properties of Laser Welding Joints for Stainless Steel to TiNi Shape Memory Alloy}, journal = {International Journal of Mineral Processing and Extractive Metallurgy}, volume = {7}, number = {3}, pages = {75-84}, doi = {10.11648/j.ijmpem.20220703.12}, url = {https://doi.org/10.11648/j.ijmpem.20220703.12}, eprint = {https://article.sciencepublishinggroup.com/pdf/10.11648.j.ijmpem.20220703.12}, abstract = {In this paper, laser welding of stainless steel and TiNi shape memory alloy dissimilar materials was carried. Microstructures of the joints were analyzed by means of scanning electron microscopy (SEM), energy dispersive spectroscopy (EDS) and X-ray diffraction (XRD). Mechanical properties of the joints were evaluated by tensile tests. Based on avoiding the formation of Ti-Fe intermetallics in the joint, three welding processes for SS-TiNi alloy joint were introduced. The joint A was formed while the laser was acted on the SS-TiNi alloy interface and joint fractured along the SS side in weld immediately after welding without filler metal. The joint B was formed while the laser was acted on the Cu interlayer. Experimental results showed that Cu interlayer was helping to decrease the Ti-Fe intermetallics by forming Ti-Cu phases in the weld. The tensile strength of the joint B was 216 MPa. The joint C was formed while the laser was acted on the SS side 1.0 mm. One process was one pass welding involving creation of a joint with one fusion weld and one brazed weld separated by remaining unmelted SS. The mechanical performance of the joint C was determined by the brazed weld formed at SS-TiNi alloy interface with a tensile strength of 256 MPa.}, year = {2022} }
TY - JOUR T1 - Interfacial Microstructure Evolution and Mechanical Properties of Laser Welding Joints for Stainless Steel to TiNi Shape Memory Alloy AU - Zhijin Guo AU - Yan Zhang AU - Jianping Zhou AU - Daqian Sun AU - Hongmei Li Y1 - 2022/07/20 PY - 2022 N1 - https://doi.org/10.11648/j.ijmpem.20220703.12 DO - 10.11648/j.ijmpem.20220703.12 T2 - International Journal of Mineral Processing and Extractive Metallurgy JF - International Journal of Mineral Processing and Extractive Metallurgy JO - International Journal of Mineral Processing and Extractive Metallurgy SP - 75 EP - 84 PB - Science Publishing Group SN - 2575-1859 UR - https://doi.org/10.11648/j.ijmpem.20220703.12 AB - In this paper, laser welding of stainless steel and TiNi shape memory alloy dissimilar materials was carried. Microstructures of the joints were analyzed by means of scanning electron microscopy (SEM), energy dispersive spectroscopy (EDS) and X-ray diffraction (XRD). Mechanical properties of the joints were evaluated by tensile tests. Based on avoiding the formation of Ti-Fe intermetallics in the joint, three welding processes for SS-TiNi alloy joint were introduced. The joint A was formed while the laser was acted on the SS-TiNi alloy interface and joint fractured along the SS side in weld immediately after welding without filler metal. The joint B was formed while the laser was acted on the Cu interlayer. Experimental results showed that Cu interlayer was helping to decrease the Ti-Fe intermetallics by forming Ti-Cu phases in the weld. The tensile strength of the joint B was 216 MPa. The joint C was formed while the laser was acted on the SS side 1.0 mm. One process was one pass welding involving creation of a joint with one fusion weld and one brazed weld separated by remaining unmelted SS. The mechanical performance of the joint C was determined by the brazed weld formed at SS-TiNi alloy interface with a tensile strength of 256 MPa. VL - 7 IS - 3 ER -