ISSN:
1573-8973
Source:
Springer Online Journal Archives 1860-2000
Topics:
Mechanical Engineering, Materials Science, Production Engineering, Mining and Metallurgy, Traffic Engineering, Precision Mechanics
Notes:
Conclusions 1. The data of microstructural, differential, thermal, and x-ray phase analyses and the study of the “composition— properties” dependences have been used for plotting polythermic sections of the Ti−Al−W−Zr phase diagram at a variable content of aluminum and tungsten (0–20%). 2. With an increase in the content of one of the elements, i.e., aluminum or tungsten (at a fixed amount of the other elements), the strength characteristics of alloys in the Ti−Zr−Al−W system at room and high (600–800°C) temperatures increase. The behavior of these curves changes when the aluminum content exceeds 9%; they become horizontal at 600 and 700°C and drop markedly at 800°C and at room temperature. 3. The plasticity characteristics of the alloys largely depend on their phase composition. At room temperature the values of δ and ψ of the alloy bearing 6% Al and 6% W drop jumpwise. The specific elongation decreases substantially at 600–800°C in the case of alloying with tungsten and aluminum, and the specific reduction of area decreases substantially in alloys with an aluminum additive. At 7–10% W, the value of ψ is maximum (ψ≅100%) at 700–800°C and attains almost 70% at 600°C.
Type of Medium:
Electronic Resource
URL:
http://dx.doi.org/10.1007/BF02471353
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