Sintering behavior and mechanical properties of Mo-TZM alloyed with nanotitanium carbide

Browning, Paul N.; Fignar, Joseph; Kulkarni, A. K.; Singh, Jogender

doi:10.1016/j.ijrmhm.2016.10.002

Cited by 28 publications

(4 citation statements)

References 16 publications

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“…Further verification and its formation mechanism were presented in the following sections. From the EDS surface scanning distribution in Figure 7c-f, the elemental O was uniformly distributed in the GBs and within the grains [60]. The bright red area indicated that the elemental O was preferably enriched at the GBs.…”

Section: Oxygen Effects On Mo Microstructure and Compositionmentioning

confidence: 95%

Exploring the Formation Mechanism, Evolution Law, and Precise Composition Control of Interstitial Oxygen in Body-Centered Cubic Mo

Xing

et al. 2022

Metals

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Interstitial oxygen (O) on the formation mechanism and enrichment distribution of body-centered cubic (BCC) molybdenum (Mo) has rarely been reported, and the O usually can cause serious brittle fracture in Mo. In this paper, we studied the formation mechanism and evolution of oxygen (O) when it was precisely controlled in the range of 3700–8600 parts per million (wppm). It was found that, with an increase in O concentration, O element not only existed in the form of solid solution but generated O element with different valence states in Mo metal. Large amounts of MoO2, MoO3, and Mo4O11 intermediate oxides were identified by electron probe micro-analyzer (EPMA) and X-ray photoelectron spectroscopy (XPS). Thermodynamic calculations revealed the formation process of oxides, and authenticity of the presence of O was verified by XPS. Enrichment and distribution of O element were analyzed by scanning electron microscopy (SEM), energy dispersive spectroscopy (EDS), and EPMA. Moreover, the compressive yield strength and hardness of Mo were greatly affected by O content range of 4500–8600 wppm. Our study is helpful to understand the behavior of interstitial impurity O in refractory Mo metals and provides important guidance for development of high-purity rare Mo metals.

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Section: Oxygen Effects On Mo Microstructure and Compositionmentioning

confidence: 95%

Exploring the Formation Mechanism, Evolution Law, and Precise Composition Control of Interstitial Oxygen in Body-Centered Cubic Mo

Xing

et al. 2022

Metals

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“…Many researchers [ 55 , [59] , [60] , [61] , [62] , [63] , [64] , [65] , [66] , [67] , [68] , [69] ] have documented in the literature the role of sintering temperature on grain growth behaviour and the associated mechanical behaviour of sintered nanomaterials. Hussein et al [ 26 ] fabricated nano-grained Ti–Nb–Zr biomaterials by utilizing a spark plasma sintering technique.…”

Section: Sintering Parametersmentioning

confidence: 99%

“…The influence of the heating rate parameter on grain growth, mechanical, and corrosion behaviour of sintered nanostructured material has been studied [ 79 , 80 ]. The sintering cycle and grain growth of a material are reduced by increasing the heating rate and volumetric heating of the powder during sintering [ 61 ]. This was confirmed by Chengshang et al [ 81 ] in their study, which stated that a smaller W grain size was observed when a high heating rate was utilized in the investigation of the heating rate effect on W–Ni–Fe alloys.…”

Section: Sintering Parametersmentioning

confidence: 99%

Sintering of nanocrystalline materials: Sintering parameters

Babalola

Ayodele

Olubambi

2023

Heliyon

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“…When the sample was sintered at 1500 • C, it is observed that the fracture mode on the TZC side was mainly intergranular fracture, and many long strip-shaped grains appeared on the fracture surface [see Figure 9c]. For the sintering temperature of 1600 • C, a network-like grain structure was observed on the fracture surface of the TZC side [36] and the grains were well refined. In addition, by conducting a comparative analysis between the tensile fracture behaviors of TZC material at room temperature and 500 • C, it can be observed that the size of grains in the TZC reduced significantly when temperature increased from room temperature to 500 • C. The reduction in grain size at higher temperature can be attributed to the doping of CNTs, which can increase the short-range order of the joint and refine the grain structure, and thus lead to a higher tensile strength [37].…”

Section: Mechanical Performancementioning

confidence: 99%

Study on Microstructure, Mechanical Performance and Thermal Shock Resistance of Diffusion Welded Joint of ODS-W and TZC Alloy

Liu,

Zhou,

et al. 2023

Metals

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The diffusion welded joint of oxide dispersion strengthened tungsten (ODS-W) and Mo-Ti-Zr-C alloy (TZC) was successfully fabricated with the use of spark plasma sintering (SPS) at a vacuum level of 10 Pa. This study systematically investigates the microstructure, mechanical performance, and thermal shock resistance of the ODS-W/TZC connector at four different temperatures, ranging from 1300 to 1600 °C. The diffusion distance between the W and Mo atoms at the interface of ODS-W/TZC joint raises as the sintering temperature increases, with a maximum diffusion distance of up to 2 μm at 1500 °C, but then slightly decreases at 1600 °C. The ODS-W/TZC connector bonded at 1500 °C exhibits the best tensile performance, with tensile strengths of 459 MPa and 786 MPa at room temperature and 500 °C, respectively. A maximum hardness of 446 HV is obtained at the interface when the sample is sintered at 1600 °C. Thermal shock tests are conducted on the surface and interface of the ODS-W/TZC connector sintered at various temperatures. ODS-W/TZC samples prepared below 1500 °C were severely damaged, leading to exfoliation after laser thermal shock, while samples prepared above 1500 °C produced fewer damage cracks. Confocal laser scanning microscope (CLSM) analysis demonstrated that the ODS-W/TZC joint fabricated at 1500 °C exhibited substantially reduced height perturbation of both its surface and interface compared to that of ODS-W, providing evidence for its superior thermal shock resistance.

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Sintering behavior and mechanical properties of Mo-TZM alloyed with nanotitanium carbide

Cited by 28 publications

References 16 publications

Exploring the Formation Mechanism, Evolution Law, and Precise Composition Control of Interstitial Oxygen in Body-Centered Cubic Mo

Exploring the Formation Mechanism, Evolution Law, and Precise Composition Control of Interstitial Oxygen in Body-Centered Cubic Mo

Sintering of nanocrystalline materials: Sintering parameters

Study on Microstructure, Mechanical Performance and Thermal Shock Resistance of Diffusion Welded Joint of ODS-W and TZC Alloy

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