Effect of thermal cycling on mechanical and microstructural properties of heat-treated Ti-6Al-4V alloy

Teja, Putti Venkata Siva; Manikandan, S.; Ayyagari, Kiran Kumar

doi:10.1088/2053-1591/ac487d

Cited by 3 publications

(2 citation statements)

References 28 publications

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“…In our case, two minutes is the dwell time. Some advantages of forced air cooling are microstructure of the metal can be improved and also increase in microhardness can be observed [28,29].…”

Section: Forced Air Coolingmentioning

confidence: 99%

Tensile Properties of Thermal Cycled Titanium Alloy (Ti–6Al–4V)

Teja

Manikandan

Kumar³

et al. 2022

Advances in Materials Science and Engineering

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The effect of thermal cycling on tensile properties and microstructural characterization of Titanium (Ti–6Al–4V) alloy which were subjected to various types of thermomechanical treatments especially stress relief annealing and solution treated aging were studied and results presented. The specimens were thermally treated at a temperature of 427°C for up to 1500 cycles. The test setup used for thermal treatment of the specimens was a specially designed experimental setup. After thermal treatment the specimens, were prepared for a tensile test to get the desired tensile properties. It was noticed that the maximum tensile strength of the specimen was observed when reached at 250 cycles and thereafter marginally increasing up to 1000 cycles. After 1000 cycles the tensile strength of the specimen decreases. Similarly, the hardness of the specimen increases up to 1000 cycles and then decreases after 1000 cycles, while elongation increases marginally when the cycle increases. Solution-treated aged specimen attains greater strength and hardness when compared to stress relief annealed specimen. With the increased number of cycles, the strength of the specimen when treated with stress relief annealing and solution-treated aging specimen increases. It was observed that the hardness and strength values decrease after 1000 cycles. With an increasing number of cycles, the tensile elongation increased. When compared with both the treatment processes the solution-treated aged specimen shows better results after thermal cycling.

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Section: Forced Air Coolingmentioning

confidence: 99%

Tensile Properties of Thermal Cycled Titanium Alloy (Ti–6Al–4V)

Teja

Manikandan

Kumar³

et al. 2022

Advances in Materials Science and Engineering

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“…With the achievements of DPSSLs over the years, a lot of researches have been undertaken in investigating the characteristics of thermal effects of laser crystals. Up to now, many methods have been proposed for the measurement of the focal length of a thermally-induced lens [28][29][30][31][32][33][34][35] , such as the flat-flat resonator method, detection beam method, method of beat frequency of two transverse modes, Fraunhofer diffraction pattern method, Shack Hartmann wave-front sensor method, and digital holographic quantitative measurement regime, etc.…”

Section: Introductionmentioning

confidence: 99%

An approach for the measurement of focal lengths of a weak thermally-induced negative lens

Fang¹,

Wang²,

Shi³

et al. 2022

Optical Design and Testing XII

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In this paper, a simple and effective method is proposed for measuring the focal length of a weak negative thermallyinduced lens. Generally, it is very difficult to measure the focal length larger than 1000 mm of a weak thermally-induced lens by utilizing the traditional procedures. In our experiment, we planned to construct a Yb:KGW laser system almost without the thermally-induced lens in which the focal length of the laser crystal should be measured precisely. With respect to the optical features of Yb:KGW crystal, the thermally-induced characteristics look like something of a negative lens with weak effects. The steps of measuring the focal length of a thermally-induced lens of the laser medium have been adopted as follows. First, the relationship between the focal length f1 of a positive assistant lens as well as the position of the assistant lens and the focal length fT of a thermally-induced lens were carefully analyzed and the experimental setup were designed through the theoretical simulation. Secondly, the variation of the spot size and post position for a He-Ne probe laser have been experimentally investigated after the probe laser beam passed through a thermally-induced lens (fT) and an assistant lens (f1) with the different drive currents of a pump LD with the wavelength of 980 nm. Then, the post position for a He-Ne laser beam can be obtained by use of a least square method, and then the focal length of a weak thermally-induced lens can be deduced with an indirect detection method. In this paper, we introduce a new technique for the measurement of the focal length with the absolute value large than 1000 mm of a negative lens, which has not been reported until now. The results might be useful for the evaluation of a weak thermally-induced lens of almost all solid-state lasers (SSLs).

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