Effects of Hot-Hydrostatic Canned Extrusion on the Stock Utilization, Microstructure and Mechanical Properties of TiBw/TC4 Composites with Quasi-Continuous Network

Feng, Yangju; Li, Bing; Cui, Guorong; Zhang, Wencong

doi:10.3390/ma10111227

Cited by 7 publications

(3 citation statements)

References 28 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…For the in situ titanium matrix composites, there is no obvious interfacial delamination between the matrix and the whiskers, so the performance of the junction is strong [17,24]. The time point and the form of junction failure will have a certain impact on the subsequent process.…”

Section: Simulation Results Experimental Verificationmentioning

confidence: 99%

See 1 more Smart Citation

Research on Microscopic Properties of TiBw/TC4 Composites for Drilling Process

et al. 2019

View full text Add to dashboard Cite

TiB-whisker-reinforced TiBw/TC4 composites are widely used in aviation, aerospace, automotive, and various other industries. However, the drilling force and temperature have a large effect on the drilling micromechanical properties of TiBw/TC4 composites. In order to explore the micro-mechanical properties and promote the optimization of drilling process, the representative volume elements of TiBW/TC4 composites were established in the Digimat-FE software tool to determine the micromechanical properties and failure mechanism of TiBW/TC4 composites. The results show: (1) maximum stress occurs at the whiskers, whereas the minimum stress appears within the basket matrix region of the reinforced phase. (2) When the force reached 300 N and the temperature reached 75 °C, the junction between the whiskers and the matrix firstly failed; when the force reached 525 N and the temperature reached 112 °C, the matrix began to fail; when the force reached 675 N and the temperature reached 138 °C, the whiskers failed. (3) The main reason for the failure of the junction between the matrix and the whiskers was that the shear stress exceeded the connection strength and the axial stress accelerated the failure process. Displacement and rotation of the whiskers were shown to occur at the moment of junction failure, owing to differences in the stress experienced on different sides of the material.

show abstract

Section: Simulation Results Experimental Verificationmentioning

confidence: 99%

“…The performance parameters of the TC4 matrix, TiB whiskers and the damage evolution parameters of Tsai-Wu failure criterion are shown in Table 1 [16,17,18].…”

Section: Finite Element Analysis Of Tibw/tc4 Compositesmentioning

confidence: 99%

Research on Microscopic Properties of TiBw/TC4 Composites for Drilling Process

et al. 2019

View full text Add to dashboard Cite

show abstract

“…The TiBw/TC4 composite material is synthesized by adding the reinforced phases into the titanium alloy matrix by employing powder metallurgy and in-situ synthesis [21]. In this study, TC4 powder of 85~125 μm (with an average particle size of 110 μm) is selected to prepare the TiBw/TC4 composite material at volume fraction of 8.5 %.…”

Section: Experimental Procedures 31 Preparation Of Tibw/tc4 Composite...mentioning

confidence: 99%

Experimental research on new hole-making method assisted with asynchronous mixed frequency vibration in TiBw/TC4 composites

Zhou

Feng

et al. 2022

Int J Adv Manuf Technol

View full text Add to dashboard Cite

With the gradual promotion and the application of difficult-to-machine materials such as titanium matrix composites in the aerospace field, high-quality hole-making technology has become a major demand in aviation manufacturing. In order to improve the hole-making quality of TiBw/TC4 composites, asynchronous mixed frequency vibration assisted hole-making (AMFVAHM) method is proposed. The process consists of two steps which are base hole drilling assisted with ultrasonic vibration (UVAD) and hole expansion by helical milling assisted with low-frequency torsional vibration (LFTVAHM). Based on this process, the cutting trajectory modeling is established, and the hole-making experiment on TiBw/TC4 composites is conducted. The experimental data shows that the maximum XY-plane average milling force decreases by 30.96 % and the maximum axial average milling force decreases by 24.49 % compared with conventional helical milling (HM) when the torsional vibration frequency and the milling frequency are the same in LFTVAHM. The hole-making experiment shows that AMFVAHM can reduce the chip size, tool wear and some other defects such as entrance/exit burrs, scratches and fractures of the hole wall. Comparing with HM and UVAD, the verticality of hole wall increases by 71.43 % and 86.21 %, the inlet damage decreases by 27.98 % and 31.60 %, the outlet damage decreases by 2.80 % and 14.47 %, the hole wall roughness (Ra) decreases by 36.29 % and 63.43 %, and the maximum white layer thickness decreases by 19.99 % and 67.66 %. Meanwhile, AMFVAHM process not only reduces the cutting force and cutting temperature, but also improves the hole-making quality due to the fretting friction effect of LFTVAHM in secondary hole expansion, which meets the need of high-quality hole-making of difficult-to-machine materials in practical engineering applications.

show abstract