Exploration Experimental Research on Laser Cladding of Ta Coat on TA2 Titanium Alloy Surface AITranslate
Abstract AITranslate
In order to ensure the corrosion resistance of the hard seal surface of titanium alloy earth-penetration valve, and improve the hardness, wear resistance and compressive fatigue properties of the valve, laser cladding of pure tantalum was carried out on the surface of TA2 titanium alloy by YAG laser. The metallurgical binding degree, microstructure, component and hardness distribution of layer-cladding Ta coat were analyzed by OM, SEM, EDS and microhardness tester. The results indicate that direct laser cladding of pure Ta powder on TA2 titanium alloy surface is feasible, and there is well metallurgical binding between Ti-Ta alloy coat and the substrate. The dilution of Ti element in laser cladding layer is large,and the dilution decreases with increased distance away from the binding surface. The binding region of laser cladding layer and the substrate is composed mainly of dendrites, and the middle region in the cladding layer is composed of dendrites and partial massive microstructure. The microhardness HV0.2 of the cladding layer is 190- 200, more than 40 higher than that of Ti substrate. The microhardness HV0.2 of the binding region is 200- 220 ,and therefore the hardness gradient is relatively obvious.
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Basic Information:
DOI：
Chinese Library Classification Number:TG146.23[金属学及工艺—金属材料]
Citation Information:
In order to ensure the corrosion resistance of the hard seal surface of titanium alloy earth-penetration valve, and improve the hardness, wear resistance and compressive fatigue properties of the valve, laser cladding of pure tantalum was carried out on the surface of TA2 titanium alloy by YAG laser. The metallurgical binding degree, microstructure, component and hardness distribution of layer-cladding Ta coat were analyzed by OM, SEM, EDS and microhardness tester. The results indicate that direct laser cladding of pure Ta powder on TA2 titanium alloy surface is feasible, and there is well metallurgical binding between Ti-Ta alloy coat and the substrate. The dilution of Ti element in laser cladding layer is large,and the dilution decreases with increased distance away from the binding surface. The binding region of laser cladding layer and the substrate is composed mainly of dendrites, and the middle region in the cladding layer is composed of dendrites and partial massive microstructure. The microhardness HV0.2 of the cladding layer is 190- 200, more than 40 higher than that of Ti substrate. The microhardness HV0.2 of the binding region is 200- 220 ,and therefore the hardness gradient is relatively obvious.
quote
| GB/T 7714-2015 | [1] DING Rui-qian, YANG Ying-li, WU Jin-ping, et al. Exploration Experimental Research on Laser Cladding of Ta Coat on TA2 Titanium Alloy Surface[J]. Rare Metals and Cemented Carbides, 2017(3): 36-40. |
| MLA | [1] DING Rui-qian, et al., "Exploration Experimental Research on Laser Cladding of Ta Coat on TA2 Titanium Alloy Surface." Rare Metals and Cemented Carbides, no. 3, 2017, pp. 36-40. |
| APA | [1] DING Rui-qian, YANG Ying-li, WU Jin-ping, & YANG Fan. (2017). Exploration Experimental Research on Laser Cladding of Ta Coat on TA2 Titanium Alloy Surface. Rare Metals and Cemented Carbides(3), 36-40. |
| IEEE | [1] DING Rui-qian, YANG Ying-li, WU Jin-ping, and YANG Fan, "Exploration Experimental Research on Laser Cladding of Ta Coat on TA2 Titanium Alloy Surface," Rare Metals and Cemented Carbides, no. 3, pp. 36-40, 2017. keywords: {earth-penetration valve;TA2 titanium alloy;Ta coat;layer cladding;microstructure;hardness} |