Fatigue life improvement of TC11 titanium alloy by novel electroshock treatment

Song, Yanli; Wang, Zhongqi; Yu, Yongqing; Wei, Wu; Wang, Zhongmei; Lu, Jue; Sun, Qian; Xie, Lechun; Hua, Lin

doi:10.1016/j.matdes.2022.110902

Cited by 21 publications

(4 citation statements)

References 23 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…For EST1, although the specimen temperature did not reach the α/β transition temperature. But the athermal effect of EST can promote nucleation because the athermal effect could promote the phase transition and reduce the free energy of nucleation [9] . As a result, the colony near the grain boundary began to nucleate, and some α phases in the grain transformed into β phases.…”

Section: Microstructure Characteristicsmentioning

confidence: 99%

Evaluation of microstructure variation of Ti-6.5Al-3.5Mo-1.5Zr-0.3Si alloy manufactured by laser melting deposition after electroshocking treatment

Sun,

Liu,

Wen

2024

Ninth International Conference on Energy Materials and Electrical Engineering (ICEMEE 2023)

View full text Add to dashboard Cite

Electroshocking treatment (EST) was a method to optimize the microstructure of titanium alloy. Under EST, the dense basket-weave structure in Ti-6.5Al-3.5Mo-1.5Zr-0.3Si (TC11) manufactured by laser melting deposition became sparse, and colony tissue nucleation grows near grain boundaries. The phase transformation induced by EST results in changes in the intensity and orientation of α and β textures in TC11, but α/β still obeyed the Burger orientation relationship, and the β phase content increased. At the same time, EST also promoted the dislocation movement near the grain boundary, and a mass of dislocation accumulation at the grain boundary increased the KAM value at the grain boundary.

show abstract

Section: Microstructure Characteristicsmentioning

confidence: 99%

Evaluation of microstructure variation of Ti-6.5Al-3.5Mo-1.5Zr-0.3Si alloy manufactured by laser melting deposition after electroshocking treatment

Sun,

Liu,

Wen

2024

Ninth International Conference on Energy Materials and Electrical Engineering (ICEMEE 2023)

View full text Add to dashboard Cite

show abstract

“…A novel electroshock treatment (EST) has been proposed recently by our team which adopts high energy density, low frequency and instantaneous current to regulate performance of metals while maintaining surface quality and dimensional accuracy. Our previous research results indicated that appropriate EST process can effectively improve strength-toughness [9] and fatigue life [10] of materials. but its mechanism is not yet clear in tempered high-carbon steel.…”

Section: Introductionmentioning

confidence: 98%

Mechanism of Electroshock Treatment on Hardness and Wear Resistance of Tempered 8Cr4Mo4V

Song,

Lu,

et al. 2023

Advances in Transdisciplinary Engineering

View full text Add to dashboard Cite

In order to further improve the wear resistance of tempered 8Cr4Mo4V steel, an electroshock treatment (EST) was conducted on the material. By means of Vickers hardness and friction-wear tests, the influence of different EST parameters on the wear resistance of materials was analyzed. The result proves that a slight decrease in the Vickers hardness of the sample is caused by EST, but the hardness consistency significantly is improved (44.7%) under appropriate treatment parameter (EST2). Meanwhile, the wear rates of specimens decrease by 42.9%, 50.0% and 71.4% under treatment of EST1-EST3, respectively. The EBSD and XRD indicates that the changes in hardness and wear resistances of 8Cr4Mo4V originates from the comprehensive effect of dislocations and carbides under the regulation of EST. In EST1, the precipitation and aggregation of carbides promotes secondary hardening, thereby reducing the wear rate. Opposite phenomenon occurs in EST2, carbide precipitation is suppressed while the lattice distortion is aggravated, the hardness rebounds slightly compared to EST1. In EST3, the greater decrease in hardness results in the formation of oxide film on the surface, further reducing the friction coefficient and wear rate.

show abstract

“…It is somehow like the electropulsing treatment (EPT), which also applies a pulse current on the specimen to change the microstructure and strengthen the properties. However, unlike EPT, EST is a novel method that has low energy consumption and high efficiency [4,5] , and can rapidly optimize the microstructure alloys in a short time, induce desired phase transition and reduce texture, thus improving their properties. Guo [6] applied EST on DED Ti-55531 specimens, after which the hardness of the specimen decreased slightly while the ductility increased significantly; Levitin et al [7] found that the strong electric pulse would make the lattice defects undergo directional healing, which not only improves the fatigue resistance but also reduces the surface residual stress alloys.…”

Section: Introductionmentioning

confidence: 99%

A study on the variation of mechanical properties of Ti-8Al-1Mo-1V titanium alloy after electro-shocking treatment

Yao,

Zhou,

Zhao

2023

J. Phys.: Conf. Ser.

View full text Add to dashboard Cite

The electro-shocking treatment (EST) was a rising method for the strengthening of titanium alloys. This work conducted EST on Ti-8Al-1Mo-1V titanium alloy specimens with the purpose to shed insights on the influence of EST on the properties of the alloy. The results indicated that the number of the pulse current increased, the properties of the Ti-8Al-1Mo-1V titanium alloy were notably improved, and the fracture mode varied from ductile fracture to a mixed fracture mode of brittle and ductile.

show abstract

Fatigue life improvement of TC11 titanium alloy by novel electroshock treatment

Cited by 21 publications

References 23 publications

Evaluation of microstructure variation of Ti-6.5Al-3.5Mo-1.5Zr-0.3Si alloy manufactured by laser melting deposition after electroshocking treatment

Evaluation of microstructure variation of Ti-6.5Al-3.5Mo-1.5Zr-0.3Si alloy manufactured by laser melting deposition after electroshocking treatment

Mechanism of Electroshock Treatment on Hardness and Wear Resistance of Tempered 8Cr4Mo4V

A study on the variation of mechanical properties of Ti-8Al-1Mo-1V titanium alloy after electro-shocking treatment

Contact Info

Product

Resources

About