Diffusion bonding of Ti—6Al—4V titanium alloy powder and solid by hot isostatic pressing

Xiao, Yiyong; Lang, Lihui; Xu, Wencai; ZHANG, De-xin

doi:10.1016/s1003-6326(22)66041-2

Cited by 8 publications

(2 citation statements)

References 31 publications

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“…Moreover, despite the diffusion of vanadium and tungsten elements occurring in the bonded region, the presence of nanoscale pores results in a limited improvement in hardness, which is similar to that of the H13 region. Corresponding investigations have also discovered that abrupt changes in mechanical characteristics, typically a deterioration in mechanical characteristics, such as the formation of certain intermetallic compounds and nanophases that raise the hardness and lower the toughness, tend to occur at the bonding interface between two metallic materials [16,[32][33][34]. Table 4 lists the mechanical characteristics of the bonding region, while con two samples that have undergone various surface treatments.…”

Section: Mechanical Propertiesmentioning

confidence: 99%

Hot Work Mold Repaired via Hot Isostatic Pressing towards High Red Hardness

Ge,

Ma,

Chen

et al. 2023

Metals

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Repairing hot work molds can extend their lifespans and reduce the production costs. This study presents a proposed method for enhancing the red hardness and strength of repaired molds. The method involves utilizing PM23 high-speed steel powder to repair H13 steel molds with two distinct surface states through the process of hot isostatic pressing (HIP). The internal microstructure changes, bonding state, fracture morphology, and crack extension behaviors of the repaired molds are characterized using scanning electron microscopy and electron backscatter diffraction technology. Additionally, the mechanical properties, including red hardness and tensile strength, are quantitatively analyzed. The findings indicate that the repaired area in the sandblasted sample exhibits a rough and uneven structure, demonstrating exceptional toughness. The tensile strength of the repaired region is approximately 1195.42 MPa, while the hardness measures around 672.8 HV. These properties effectively enhance the performance of the molds. The experimental findings indicate that HIP can effectively restore molds, resulting in enhanced red hardness and improved toughness, particularly when combined with sandblasting as a pretreatment method.

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Section: Mechanical Propertiesmentioning

confidence: 99%

Hot Work Mold Repaired via Hot Isostatic Pressing towards High Red Hardness

Ge,

Ma,

Chen

et al. 2023

Metals

View full text Add to dashboard Cite

show abstract

“…Hot isostatic pressing (HIP) technology originated in the 1950s, first for diffusion joining of fuel elements in the atomic energy reaction process [17]. Due to its own process superiority, HIP was gradually expanded to various production areas such as castings densification treatment, diffusion connection of heterogeneous materials, and powder metallurgy near-net forming [17][18][19]. As an attractive post-treatment technology, the high temperature and pressure of the HIP process can significantly improve the structure of the workpiece, eliminate internal porosity, and improve the overall mechanical properties of the material [20][21][22].…”

Section: Introductionmentioning

confidence: 99%

Effects of HIP Process Parameters on Microstructure and Mechanical Properties of Ti-6Al-4V Fabricated by SLM

Lv¹,

Li²,

Che³

et al. 2023

Metals

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Ti-6Al-4V titanium alloy products formed by selective laser melting (SLM) are characterized by high strength and low plasticity. In addition, there may be pores inside the material, which may become a fracture sprouting point and accelerate the failure of the parts. Using an optical microscope (OM), scanning electron microscope (SEM), and electronic universal testing machine, the effects of hot isostatic pressing (HIP) parameters on the microstructure and tensile property of SLM-formed Ti-6Al-4V titanium alloy were investigated. The results show that HIP performed below the β-phase transition temperature, and the structure of the Ti-6Al-4V titanium alloy is composed of an α phase and β phase. With the increase in the HIP temperature, the α lath coarsens into a short rod, the content of the β phase increases and coarsens, and the tensile strength and yield strength of Ti-6Al-4V show a decreasing trend. With an HIP process performed at a temperature of 910 °C and pressure of 130 MPa for 2 h, the Ti-6Al-4V titanium alloy obtains the best matching of strength and plasticity.

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Fabrication of SiC Fiber-Reinforced Titanium Matrix Composite via Powder Hot Isostatic Pressing

Xiao,

Li,

et al. 2023

Lecture Notes in Mechanical Engineering

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Diffusion bonding of Ti—6Al—4V titanium alloy powder and solid by hot isostatic pressing

Cited by 8 publications

References 31 publications

Hot Work Mold Repaired via Hot Isostatic Pressing towards High Red Hardness

Hot Work Mold Repaired via Hot Isostatic Pressing towards High Red Hardness

Effects of HIP Process Parameters on Microstructure and Mechanical Properties of Ti-6Al-4V Fabricated by SLM

Fabrication of SiC Fiber-Reinforced Titanium Matrix Composite via Powder Hot Isostatic Pressing

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