To suppress occurrence of stress corrosion cracking in a weld due to tensile residual stress generated in a web or a middle rib in case of bend forming of an aluminum alloy extrusion having the weld on the web or/and the middle rib. In bend forming of the aluminum alloy extrusion (21), a peak position (p) of tensile residual stress generated in the middle rib (26) exists in a region other than thevicinity of the weld. Since the peak position (p) is away from the weld (27e) by a distance (D), tensile residual stress in the weld (27e) is reduced, making it possible to suppress occurrence of stress corrosion cracking.
本发明的铝合金构件,对于在腹板或/和中肋上具有焊合部的铝合金挤压型材进行弯曲加工后,抑制因所述腹板或中肋中发生的拉伸残余应力而导致在所述焊合部发生应力腐蚀开裂。对于铝合金挤压型材(21)进行弯曲加工后在中肋(26)发生的拉伸残余应力的峰位(p)存在于所述焊合部的附近之外的位置。由于所述峰位(p)距焊合部(27e)只离开间隔(D),所以焊合部(27e)的拉伸残余应力被降低,能够抑制应力腐蚀开裂的发生。
Aluminum alloy component
铝合金构件
2020-09-08
Patent
Electronic Resource
Chinese
IPC: | B21C MANUFACTURE OF METAL SHEETS, WIRE, RODS, TUBES, PROFILES OR LIKE SEMI-MANUFACTURED PRODUCTS OTHERWISE THAN BY ROLLING , Herstellen von Blechen, Metalldraht, -stangen, -rohren Metallprofilen oder Halbzeugen auf andere Weise als durch Walzen / B60J WINDOWS, WINDSCREENS, NON-FIXED ROOFS, DOORS, OR SIMILAR DEVICES FOR VEHICLES , Fenster, Windschutzscheiben und bewegbare Dächer, Türen oder Ähnliches für Fahrzeuge / B60R Fahrzeuge, Fahrzeugausstattung oder Fahrzeugteile, soweit nicht anderweitig vorgesehen , VEHICLES, VEHICLE FITTINGS, OR VEHICLE PARTS, NOT OTHERWISE PROVIDED FOR |
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