Effect of cryogenic treatment and aging treatment on the tensile properties and microstructure of Ti–6Al–4V alloy

Gu, Kai; Zhang, Hong; Zhao, Bing; Wang, Junjie; Zhou, Yuan; Li, Zhiqiang

doi:10.1016/j.msea.2013.07.021

Cited by 106 publications

(46 citation statements)

References 32 publications

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“…The cooling and heating rates at low temperature were both 2 °C min −1 . The SLX series program was used for cryogenic treatment …”

Section: Methodsmentioning

confidence: 99%

“…In view of favorable optimization effect of DCT on tool steels, many theories have been proposed to explain the mechanism and microstructural evolution (such as martensite transformation, ultra‐fine carbide precipitation, stress relief etc.). Some studies indicated that DCT can improve the properties of material, including wear resistance and fracture toughness . It is reported that optimization by DCT led to the transformation of retained austenite and newly formed fine carbides .…”

Section: Introductionmentioning

confidence: 99%

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On the Optimization of Microstructure and Mechanical Properties of CrWMn Tool Steel by Deep Cryogenic Treatment

Misra

Chen

et al. 2019

steel research int.

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The authors explore here the influence of cryogenic treatment on the microstructure and mechanical properties of CrWMn tool steel. Compared to the normal quenching and tempering process, the tensile strength, toughness, and hardness is enhanced after quenching‐cryogenic‐tempering treatment. The result is attributed to the high number density of precipitated ultra‐fine small granular carbide (SGC), the transformation of retained austenite, and the refinement of the martensite. Two types of retained austenite (filmy and blocky) would transform at low temperature or during the tempering process. Results of tempering curves indirectly prove that a part of SGCs precipitates during the deep cryogenic treatment. The wear resistance is improved and the friction coefficient is decreased by adding cryogenic treatment. The excellent wear resistance after cryogenic treatment is ascribed to the enhancement of hardness and low friction coefficient. The extra precipitation of small granular carbides induced by cryogenic treatment contributes to the wear resistance.

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“…The cooling and heating rates at low temperature were both 2 °C min −1 . The SLX series program was used for cryogenic treatment …”

Section: Methodsmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

On the Optimization of Microstructure and Mechanical Properties of CrWMn Tool Steel by Deep Cryogenic Treatment

Misra

Chen

et al. 2019

steel research int.

Self Cite

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“…Deep cryogenic treatment (DCT) is a supplement of conventional heat treatment used to modify materials properties in order to enhance their performance [16,17]. Recently, some researchers found that deep cryogenic treatment can improve the hardness, compression strength, fatigue resistance, and wear resistance of tool steels [18][19][20][21][22][23].…”

Section: Introductionmentioning

confidence: 99%

Effect of Deep Cryogenic Treatment on Microstructure and Properties of Sintered Fe–Co–Cu-Based Diamond Composites

Dai

Han

et al. 2019

Applied Sciences

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Metal-matrix-impregnated diamond composites are used for fabricating many kinds of diamond tools. In the efforts to satisfy the increasing engineering requirements, researchers have brought more attention to find novel methods of enhancing the performance of impregnated diamond composites. In this study, deep cryogenic treatment was applied to Fe–Co–Cu-based diamond composites to improve their performance. Relative density, hardness, bending strength, and grinding ratio of matrix and diamond composite samples were measured by a series of tests. Meanwhile, the fracture morphologies of all samples after the bending strength test were observed and analyzed by scanning electron microscope. The results showed that the hardness and bending strength of matrix increased slightly after deep cryogenic treatment. The grinding ratio of impregnated diamond composites exhibited a great increase by 32.9% as a result of deep cryogenic treatment. The strengthening mechanism was analyzed in detail. The Fe–Co–Cu-based impregnated composites subjected to deep cryogenic treatment for 1 h exhibited the best overall performance.

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“…The CT of other magnesium alloys, such as Mg-1.5Zn-0.15Gd and AZ91, were investigated, and it was found that CT could improve the microstructure and mechanical properties of the alloys [12,13]. Studies also revealed that CT improved the mechanical properties, dimensional stability, wear resistance and thermal conductivity of aluminum alloys, magnesium alloys, and copper alloys [14]. Zhou et al [15] experimentally investigated the tensile properties and microstructures of the 2024-T351 aluminum alloy subjected to CT.…”

Section: Introductionmentioning

confidence: 99%

“…Yumark [21] also found that the content of β phase was decreased after CT, and the energy absorption increased and damaged areas were decreased. Moreover, Gu et al [14] also investigated the effect of CT on the mechanical properties of Ti-6Al-4V alloy. They found that the microstructure of Ti-6Al-4V alloy consisted of α phase and β phase, with β phases dispersed in the boundaries of equiaxed α grains.…”

Section: Introductionmentioning

confidence: 99%

Effects of Cryogenic Treatment after Annealing of Ti-6Al-4V Alloy Sheet on Its Formability at Room Temperature

Zheng

Liu

et al. 2018

Metals

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In this article, the effects of cryogenic treatment after annealing on the formability of Ti-6Al-4V alloy sheet were experimentally studied. The Ti-6Al-4V titanium alloy was treated by cryogenic treatment after annealing (ACT). Tensile tests were carried out using a universal machine at room temperature. The microstructure evolution of Ti-6Al-4V subjected to ACT was also investigated using an optical microscope (OM). Both the shearing performance and drawing formability were analyzed by punch shearing tests and deep drawing tests, respectively. Results showed that after ACT, the tendency of the β phase can be apparently changing into stable β' and α' phases. The elastic modulus is lower than that of the untreated material. It was found that both the yield strength and tensile strength are declined slightly, whereas the ductility is increased significantly. The shear strength in punch shearing is decreased at room temperature and cryogenic temperature. The ratio of smooth zone on the section after ACT3 is much larger than the others. The rollover diameters are not obviously greater than those of the untreated. Additionally, the height of the burr shows a decreasing trend after ACT. During deep drawing, drawing depth is deeper than that of the untreated material, the drawing load after ACT is reduced, and the decreasing tendency of the drawing load slows down. It is noted that the micro-cracks occur at the bottom of the sample.

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Effect of cryogenic treatment and aging treatment on the tensile properties and microstructure of Ti–6Al–4V alloy

Cited by 106 publications

References 32 publications

On the Optimization of Microstructure and Mechanical Properties of CrWMn Tool Steel by Deep Cryogenic Treatment

On the Optimization of Microstructure and Mechanical Properties of CrWMn Tool Steel by Deep Cryogenic Treatment

Effect of Deep Cryogenic Treatment on Microstructure and Properties of Sintered Fe–Co–Cu-Based Diamond Composites

Effects of Cryogenic Treatment after Annealing of Ti-6Al-4V Alloy Sheet on Its Formability at Room Temperature

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