| HU Teng-teng,ZHANG Feng-ying,QIU Ying,WANG Kun,WANG Gang,YANG Er-kai.Effect of Element Addition Method on Formability and Microstructure of Laser Cladding Deposited Ti-25V-15Cr Alloy[J],48(5):116-122 |
| Effect of Element Addition Method on Formability and Microstructure of Laser Cladding Deposited Ti-25V-15Cr Alloy |
| Received:December 04, 2018 Revised:May 20, 2019 |
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| DOI：10.16490/j.cnki.issn.1001-3660.2019.05.018 |
| KeyWord:laser cladding deposition Ti-25V-15Cr bond coating method microstructure, formability deposition efficiencyt |
| Author | Institution |
| HU Teng-teng |
School of Materials, Chang′an University, Xi′an , China |
| ZHANG Feng-ying |
School of Materials, Chang′an University, Xi′an , China |
| QIU Ying |
School of Materials, Chang′an University, Xi′an , China |
| WANG Kun |
School of Materials, Chang′an University, Xi′an , China |
| WANG Gang |
School of Materials, Chang′an University, Xi′an , China |
| YANG Er-kai |
School of Materials, Chang′an University, Xi′an , China |
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| Abstract: |
| The work aims to investigate the effect of the addition method of elemental powders V and Cr on the microstructure and formability of laser cladding deposited Ti-25V-15Cr alloy with Ti-25V-15Cr alloy as research subject. The deposition experiments were performed from three kinds of powder feedstock, including bonded coated Ti(150 mm)+V(15 mm)+Cr(15 mm), directly mixed Ti(150 mm)+V(15 mm)+Cr(15 mm) and directly mixed Ti(150 mm)+V(100 mm)+Cr(150 mm), and the height, width and microstructure of the deposited samples were analyzed. Deposited efficiency of the samples from the bonded coated Ti (150 mm)+V(15 mm)+Cr(15 mm) and directly mixed Ti(150 mm)+V(100 mm)+Cr(150 mm) were much higher than that from the directly mixed Ti(150 mm)+V(15 mm)+Cr(15 mm). The microstructure of the deposited samples from Ti(150 mm)+V(15 mm)+Cr(15 mm) and from directly mixed Ti(150 mm)+V(100 mm)+Cr(150 mm) were mainly composed of fine equiaxed grains and near-equiaxed grains, while that from the directly mixed Ti(150 mm)+V(15 mm)+Cr(15 mm) consisted of epitaxially columnar grains. When the bonded coated Ti (150 μm) + V (15 μm) + Cr (15 μm) is used as the deposited material, the grain size can be refined to some extent while the deposition efficiency can be improved. This method has a significant influence on the formability, composition uniformity and microstructure of the laser cladding deposited samples. |
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