HIP temperature and properties of a gas-atomized γ-titanium aluminide alloy

Hot isostatic pressing and heat treatment development of powder metallurgy beta gamma titanium aluminide alloys

“…Furthermore, according to Figure 78a and Figure 80, it can be predicted that the volume fraction of the p phase will increase for HIP temperatures above 1300 °C [61]. The increased temperature would also result in a significant increase in the grain size and volume fraction of lamellar colonies [64]. As mentioned previously, the HIP temperature setting of 1300 °C likely represents a lower actual specimen temperature, which would more closely coincide with the results found by Clemens.…”

A novel near α-Ti alloy prepared by hot isostatic pressing: Microstructure evolution mechanism and high temperature tensile properties

“…In our previous work, a monolithic Ti6Al4V disk was successfully fabricated using NNS-HIP and the relative density of the disk reached 99.5% [24]. So far, HIP processing of Ti6Al4V [25][26][27], TiAl [28][29], Nickel-based superalloy [30][31][32][33][34], and Al-based powders [35], etc., has been studied. However, up to now, to the best of authors' knowledge, there was no literature reported on the fabrication of a near-α high temperature titanium alloy (the series of Ti-Al-Sn-Zr-Mo-Si) by HIP process and the study of high temperature mechanical performance was rarely involved.…”

Role of boron in TiAl alloy development: a review

“…It is the same in hot isostatic pressing (HIPping) TiAl powders. Only in alloys with boron additions could the HIPping temperature be raised to the  phase field, resulting fine lamellar microstructures in the HIPped alloys to reduce sensitivity to defects and improve creep resistance [60,61].…”