发明名称 |
Thick-section metal forming via friction stir processing |
摘要 |
Friction stir processing (FSP) modifies the surface microstructure of metals so that thick-section metal workpieces can be bent over large angles without formation of surface cracks. A thick 2519-T8 aluminum plate (25.4 mm thick and 50.8 mm wide) was friction stir processed across the pre-tensile surface to a depth of 6.3 mm, and was then bent at room temperature over a punch with radius 38.1 mm into a v-shaped die to an 80° bend angle. Whereas unprocessed workpieces of this type exhibited surface cracking at 31° bend angle and failed at 40° bend angle, no cracking was evident for the friction stir processed workpiece up to 80° bend angle. |
申请公布号 |
US6866180(B2) |
申请公布日期 |
2005.03.15 |
申请号 |
US20030368674 |
申请日期 |
2003.02.18 |
申请人 |
ROCKWELL SCIENTIFIC LICENSING, LLC |
发明人 |
MAHONEY MURRAY W.;BINGEL WILLIAM H. |
分类号 |
B21D5/02;B23K20/12;C21D1/34;C21D7/00;(IPC1-7):B23K20/12;B21B15/00;C22F1/00 |
主分类号 |
B21D5/02 |
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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