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TA 1 Titanium Alloy Bar-TA1 Titanium Alloy Plate _ (9th Dec 22 at 12:51am UTC)
Original Title: TA 1 Titanium Alloy Bar-TA 1 Titanium Alloy Plate TA 1 titanium alloy Titanium and its alloys have the advantages of high specific strength, oxidation resistance, chloride ion corrosion resistance and good biocompatibility. It is widely used in aerospace, marine engineering, yacht manufacturing, island reef construction, seawater desalination, medical equipment and other industries. GB grades: TA1, TA2, TA3, TA7, TA9, TA10, TC4, TC4ELI, TC6, TC9,titanium seamless tube, TC10, TC11 American standard: GR1, GR2, GR3, GR5, GR7,Titanium welding pipe, GR12 TA 1 is an α structure titanium alloy with excellent stamping and welding properties, as well as good machinability. It is often used to manufacture parts below 350 ° C and small stress, and can process various stamping parts with complex shapes. Due to the serious springback of TA1 titanium alloy at room temperature, the forming stability is poor, and the dimensional accuracy of the formed parts is low. Therefore, "plate forming + welding + thermal calibration" is often used in production. "Shape" Technology of High Precision Manufacturing TA1 titanium alloy sheet is light, corrosion-resistant, and has good mechanical properties. In addition to being widely used in traditional fields such as aerospace and medical treatment, it has also been used in high-end cabinets in recent years, such as bacteriostatic sinks and baby bowls. TA1 contains Ti 1.0-2.5, Al 0.7-2.0, Mn 0.30, titanium bar gr7 ,nickel titanium wire, Fe 0.08, C 0.05, N 0.012, H 0.15, O 0.10, and other elements 0.40 TA2 Titanium (Ti) balance, iron (Fe) ≤ 0.30, carbon (C) ≤ 0.10, nitrogen (N) ≤ 0.05, hydrogen (H) ≤ 0.015, oxygen (O) ≤ 0.25. The tensile strength of TA4 is slightly higher than that of commercial pure titanium, and it can be used as a structural material in the medium strength range. It is mainly used as welding wire in China. TA4 Titanium (Ti) rest, Fe ≤ 0.30, C ≤ 0.08, N ≤ 0.05, H ≤ 0.015, O ≤ 0.20, Al 5.5 ~ 6.75, V 3.5 ~ 4.5 TC4 Titanium (Ti) balance, iron (Fe) ≤ 0.1, carbon (C) ≤ 0.03, nitrogen (N) ≤ 0.01, hydrogen (H) ≤ 0.01, oxygen (O) ≤ 0.20, aluminum (Al) 5.6 ~ 6.19, V 4.18. Titanium will produce oxide scale and a certain thickness of oxygen-rich layer in the process of billet heating, forging, hot rolling and so on. The oxygen-rich layer is formed by diffusion and solid solution of oxygen atoms in a high temperature atmosphere. In general, the oxygen-rich layer destroys plasticity and toughness. Therefore, in the process of "shot peening + pickling" of hot-rolled plate, it is necessary to remove the surface oxide scale and oxygen-rich layer. However, the removal of the oxygen-rich layer results in a decrease in yield. The application of titanium in friction environment is limited because of its low surface hardness and poor wear resistance. Case hardening techniques are required. Technology to improve wear resistance. As a stable element of α phase, oxygen is an important interstitial solid solution strengthening element with high solid solubility, which forms a certain thickness of oxygen-rich hardening layer near the metal surface. For some parts with high wear resistance and low plasticity and toughness requirements, the oxygen-rich layer can be retained to increase the wear resistance of the parts. TA1 is α single-phase structure and TC4 is α + β two-phase structure. The difference between the two structures will affect the composition of the oxide scale and the thickness of the oxygen-rich layer. (1) The loose and porous scale structure of TC4 promotes the mass transfer of oxygen and accelerates the oxidation, which not only makes the TC4 scale rough, but also makes the TC4 scale obviously thicker than the TA1 scale. (2) The thickness of oxygen-rich layer of TA1 and TC4 is 5 μm and 60 μm, respectively. The porous structure of the TC4 scale promotes the formation of a thicker oxygen-rich layer in TC4 than in TA1. (2) The thickness of the hardened layer is almost the same as that of the oxygen-enriched layer, which indicates that the solid solution strengthening effect of oxygen interstitial atoms in the oxygen-enriched layer promotes the formation of the hardened layer.
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