In situ neutron diffraction observations of Ti-TiB composites

Singh, Harshpreet; Hayat, Muhammad Dilawer; He, Zhen; Peterson, Vanessa K.; Das, Raj; Cao, Peng

doi:10.1016/j.compositesa.2019.105501

Cited by 29 publications

(8 citation statements)

References 25 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…Additionally, then TiBw grew along the B-B zig-zag, due to the bond of B-B being stronger than those of Ti-B and Ti-Ti. Hence, Harshpreet Singh [11] and Y.S. Tian et al [12] did not find the process of TiBw squeezed out in their papers.…”

Section: Introductionmentioning

confidence: 93%

“…This could be proved by the root of TiBw wrapped by Ti matrix in Figure 3a. Harshpreet Singh [11] studied that TiB grows via the one-way dispersion of B atoms According to the SEM and EDS results of the B element in Figure 3, the schematic diagram of B atoms in the TiBw and matrix was illustrated in Figure 4c. For the growth of TiBw pinned in the Ti matrix, B was the essential element.…”

Section: Ti + Tib 2 = 2tibmentioning

confidence: 99%

“…Feng et al [8], Chen et al [9] and Hou et al [10] obtained expected results in above studies; however, the process and growth of TiBw during sintering were not investigated. Harshpreet Singh [11] studied that TiB grows preferentially via the one-way dispersion of B atoms mostly along the [010] direction because of the steadiness of the B-B bonds in the [010] direction. Therefore, the faster diffusion rate in the longitudinal direction compared to the transverse direction seems to lead to the formation of needle-shaped whiskers.…”

Section: Introductionmentioning

confidence: 99%

See 2 more Smart Citations

The Sticking Out Mechanism and Growth of TiB Whiskers from TiBw/Ti-6Al-4V Composites during Sintering

Cui

Yang

Hou

et al. 2020

Metals

View full text Add to dashboard Cite

The process of TiB whiskers (TiBw) squeezed out and the growth of sticking out TiBw were investigated in TiBw/Ti-6Al-4V composites via adding 5 vol% TiB2 powders. TiB2 distributed along the surface of Ti-6Al-4V powders by low energy milling, resulted in the enrichment region of B and Ti elements. During sintering, TiBw nucleated and grew along the [010] direction with the diffusion of B and Ti atoms in the enrichment region. Due to larger thermal expansion ratio of TiBw, the TiBw were squeezed out from the Ti matrix, and the sticking out TiBw grew gradually with the diffusion of B and Ti atoms from the enrichment region. Because of the high interfacial strength between TiBw and Ti matrix, the matrix adhered to TiBw, and hindered the squeezing out of TiBw. Eventually, the cone TiBw stuck out the Ti matrix, and the other end of TiBw pinned in Ti matrix. Moreover, the diameter of TiBw near surface between TiB2 and Ti matrix was larger than other areas, resulting from the high concentration of B and Ti atoms. The solubilized B atoms near TiBw were absorbed by TiBw, which was considered as the other B source of TiBw.

show abstract

Section: Introductionmentioning

confidence: 93%

Section: Ti + Tib 2 = 2tibmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

See 1 more Smart Citation

The Sticking Out Mechanism and Growth of TiB Whiskers from TiBw/Ti-6Al-4V Composites during Sintering

Cui

Yang

Hou

et al. 2020

Metals

View full text Add to dashboard Cite

show abstract

“…Figure 5b presents the comparison about the tensile properties of our composites together with other recent literature data. [7,9,[23][24][25][26][27][28][29][30][31] Usually, it is difficult to achieve both high strength and great plasticity through traditional method. In this study, the composites prepared using ceramic precursor PSZ have a good match of the two properties.…”

Section: Mechanical Propertiesmentioning

confidence: 99%

High Strength and High Wear‐Resistant Ti Composites Fabricated by Powder Metallurgy Pressureless Sintering

Liu

Sun

Kuang

et al. 2022

Adv Materials Technologies

View full text Add to dashboard Cite

In this work, high strength and high wear‐resistant titanium matrix composites (TMCs) reinforced with in situ TiC derived from pyrolysis of polysilazane (PSZ) are fabricated successfully. The processing technology is developed with a novel powder metallurgy method combining solution‐assisted wet mixing and pressureless sintering. The effects of PSZ addition on the microstructure, hardness, mechanical properties, and tribological properties are systematically studied. The TMCs possess better comprehensive properties compared to conventional ex situ methods. The pyrolysis of PSZ leads to the formation of TiC particles and N, Si atoms solid‐solution in the Ti matrix. The microstructure of the composites is homogenous and fine‐grained. The average grain size of α‐Ti decreases significantly from 106.1 µm of pure Ti to 37.2 µm of the 1.5 wt% PSZ/Ti composite. Among these TMCs, the 1.5 wt% PSZ/Ti composite displays comprehensively excellent mechanical properties with the ultimate tensile strength (UTS) of 711 MPa, yield strength (YS) of 568 MPa, and elongation (EL) of 8.0%. In addition, the composite possesses a high wear resistance with a low specific wear rate of 0.355 × 10−12 m3 N−1 m−1 under constant condition (0.03 m s−1, 2N).

show abstract

“…The reinforcement powder was added to the powder matrix in upper and lower layers and pressed at 500 MPa by cold pressing to produce a 4.5 mm thick composite sample with a 24×10mm (with three 1.5mm layers) as showing in Figure 1. The samples Timatrix composite reinforced by B4C and CNF were sintered in a tube furnace under a protective argon gas atmosphere with 1300ºC [22] and the duration was 60 minutes with a heating and cooling rate of 10ºC/min. Figure 2.…”

Section: Experimental Studies 31 Production Of Fgmsmentioning

confidence: 99%

CORROSION PROPERTIES OF Ti-B4C/CNF FUNCTIONALLY GRADED MATERIALS

Gariba¹,

Islak²

2020

NWSA

View full text Add to dashboard Cite

This study aims to investigate corrosion properties of Ti-B4C/CNF functional graded materials (FGMs). FGMs are produced in three layers by traditional cold pressing and sintering method. While B4C was incorporated into the Ti matrix at 5%, 10% and 15% percent, the CNF was only 0.5% by volume. Corrosion properties of FGMs are determined by potentiodynamic method. 3 M HCl was preferred as the corrosion solution. Corrosion rates were calculated from the Tafel curve and the corrosion surface was examined by using SEM-EDS. The results show that the corrosion process of composite material in 3 M HCl showed different corrosion resistance, in which corrosion rate showed the evolution trend of initial increase and subsequent decrease, while amount of reinforcement changed. While the best corrosion resistance among the FGMs was determined in the sample with 5%B4C additive, the worst corrosion resistance was determined with 15%B4C+0.5% CNF additive.

show abstract

In situ neutron diffraction observations of Ti-TiB composites

Cited by 29 publications

References 25 publications

The Sticking Out Mechanism and Growth of TiB Whiskers from TiBw/Ti-6Al-4V Composites during Sintering

The Sticking Out Mechanism and Growth of TiB Whiskers from TiBw/Ti-6Al-4V Composites during Sintering

High Strength and High Wear‐Resistant Ti Composites Fabricated by Powder Metallurgy Pressureless Sintering

CORROSION PROPERTIES OF Ti-B4C/CNF FUNCTIONALLY GRADED MATERIALS

Contact Info

Product

Resources

About