2 results about "Phase diagram" patented technology

The invention discloses a high-strength heat-resistance aluminum alloy material and a preparation method thereof. The alloy material comprises the components in percentage by weight: 1.0-10.0% of Cu, 0.05-1.5% of Mn, 0.01-0.5% of Cd, 0.01-0.5% of Ti, 0.01-0.2% of B, 0.01-1.0% of Zr, 0.1-3.0% of Li, 0.05-5% of RE and the balance of Al. By adopting high-quality melt and solid solution and phase diagram principle as guide and preferably choosing alloy main elements Cu, Mn and RE formula, the invention reduces alloy standard solid phase temperature range and solves the problems of large hot cracktendency, low high-temperature strength of products and the like in casting; in addition, by preferably choosing low-cost multielement microalloying element formula, the invention creates material condition for culturing and grain refining of medium-high and strengthening phases of the solid solution; and moreover, by optimizing the melting and heating processing technology, the invention realizes sufficient culturing and full play of grain refining of the medium-high and strengthening phases of the solid solution so as to finally prepare the high-strength heat-resistance aluminum alloy material.