发明名称 |
Method for thermomechanical processing of ingot metallurgy near gamma titanium aluminides to refine grain size and optimize mechanical properties |
摘要 |
A method for thermomechanically processing gamma titanium aluminide alloy wrought products comprises the following steps: a) a near gamma titanium aluminide alloy ingot is cast; b) the ingot is hot isostatically pressed (HIP'ed) to seal off casting defects; c) the HIP'ed ingot is prepared into suitable forging preforms with or without intermediate homogenization heat treatment; d) the forging preforms are isothermally forged into suitable end product preforms at temperatures sufficiently close to the phase line between the alpha+gamma and alpha-two+gamma phase fields so as to break down the ingot microstructure and to yield a largely equiaxed gamma microstructure; and e) the end product preforms are processed into the desired wrought end products through a controlled rolling process or a closed-die forging operation.
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申请公布号 |
US5442847(A) |
申请公布日期 |
1995.08.22 |
申请号 |
US19940251065 |
申请日期 |
1994.05.31 |
申请人 |
ROCKWELL INTERNATIONAL CORPORATION |
发明人 |
SEMIATIN, SHELDON L.;EL SOUDANI, SAMI M.;VOLLMER, DONALD C.;THOMPSON, CLARENCE R. |
分类号 |
B21B1/38;B21B3/00;C21D1/02;C22C14/00;C22F1/18;(IPC1-7):B21B1/46 |
主分类号 |
B21B1/38 |
代理机构 |
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代理人 |
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主权项 |
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地址 |
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