Elevated refractory alloy with ambient-temperature and low-temperature ductility and method thereof

摘要

An elevated refractory alloy with ambient-temperature and low-temperature ductility and the method thereof is disclosed, that is, at least four high-melting point metal elements are composed with at least four carbides of the high-melting point metal elements through a high-temperature alloy process, the carbides is dissolved in the high-melting point metal elements, therefore the high-melting point metal elements are wet and composed with the carbides, consequently the crystallographic structure composed by the high-melting point metal elements and the carbides is changed from a body-centered cubic structure to a face-centered cubic structure. Therefore, at least four high-melting point metal elements are composed with corresponding carbides of the four high-melting point metal elements and an alloy material is made through high-temperature, wherein the crystallographic structure of the alloy material is a face-centered cubic structure so as to let that the alloy material is convenient machined.

主权项

1. A refractory alloy with ambient-temperature ductility comprising:
metal elements including chromium, titanium, vanadium, niobium, molybdenum, tantalum, nickel, cobalt, and tungsten; corresponding carbides of the metal elements having face-centered cubic structure; the carbides being dissolved in the metal elements so that the metal elements are wetted and composed with the carbides; the crystallographic structure of the metal elements is a body-centered cubic structure prior to being alloyed; the crystallographic structure of the alloy is a face-centered cubic structure; the alloy having a grain size of 125.0 to 237.6 μm; the alloy having an atomic radius of 1.249-1.432 Å; the alloy being made by the process of: (a) modulating carbides of the metal elements, the metal elements being manufactured to become the alloy, the molar ratio of the metal elements and the carbides being one to one; (b) averagely mixing the metal elements with the carbides through a process of ball-mixing by mechanical alloying; (c) sintering the averagely mixed metal elements and carbides to form the refractory alloy.