公开(公告)号：US20040140019A1

公开(公告)日：2004-07-22

申请号：US10348841

申请日：2003-01-22

申请人： The Boeing Company

发明人： Clifford C. Bampton ,  John R. Wooten

IPC分类号： B22F005/00 ,  C22C021/00

CPC分类号： C22C1/0416 ,  B21C23/00 ,  B21K1/58 ,  B21K1/60 ,  B22F9/04 ,  B22F2009/041 ,  B22F2999/00 ,  F16B19/04 ,  B22F1/0044 ,  B22F2202/03

摘要： High strength aluminum alloy rivets are provided in which the aluminum alloys exhibit high strength at atmospheric temperatures and maintain high strength and ductility at extremely low temperatures. The rivets are produced from an alloy which is made by blending about 89 atomic % to 99 atomic % aluminum, 1 atomic % to 11 atomic % of a secondary metal selected from the group consisting of magnesium, lithium, silicon, titanium, zirconium, and combinations thereof, and up to about 10 atomic % of a tertiary metal selected from the group consisting of Be, Ca, Sr, Ba, Ra, Sc, V, Cr, Mn, Fe, Co, Ni, Cu, Zn, Y, Nb, Mo, Tc, Ru, Rh, Pd, Ag, Cd, W, and combinations thereof. The alloy is produced by nanostructure material synthesis, such as cryomilling, in the absence of extrinsically added refractory dispersoids. The synthesized alloy is then consolidated and formed into a solid or blind rivet. Grain size within the rivet is less than 0.5 nullm, and the rivet has exceptional thermal stability, resistance to strain localization cracking during rivet head upsetting, and resistance to stress corrosion cracking during service.

摘要翻译： 提供了高强度铝合金铆钉，其中铝合金在大气温度下表现出高强度，并且在极低温度下保持高强度和延展性。 铆钉由合金制成，该合金通过共混约89原子％至99原子％的铝，1原子％至11原子％的选自镁，锂，硅，钛，锆的二次金属和 选自Be，Ca，Sr，Ba，Ra，Sc，V，Cr，Mn，Fe，Co，Ni，Cu，Zn，Y中的至少约10原子％的三元金属， Nb，Mo，Tc，Ru，Rh，Pd，Ag，Cd，W及其组合。 该合金是通过纳米结构材料的合成，如冷冻法，在不存在外加的耐火材料分散体的情况下生产的。 然后将合成的合金固结并形成固体或盲铆钉。 铆钉内的晶粒尺寸小于0.5μm，铆钉具有出色的热稳定性，抗铆钉头镦锻时的抗应变定位开裂性，以及使用过程中的耐应力腐蚀开裂性。

公开(公告)号：US20040177723A1

公开(公告)日：2004-09-16

申请号：US10388059

申请日：2003-03-12

申请人： The Boeing Company

发明人： Thomas J. Van Daam ,  Clifford C. Bampton

IPC分类号： B22F009/16

CPC分类号： B02C17/16 ,  B02C19/186 ,  B22F2998/10 ,  B22F2999/00 ,  C22C1/1084 ,  B22F9/04 ,  B22F3/15 ,  B22F3/20 ,  B22F1/0044 ,  B22F2202/03

摘要： A method of producing high strength nanophase metal alloy powder by cryomilling metal powder under conditions which cause the formation of intrinsic nitrides, and of producing high strength metal articles by subjecting the nitrided cryomilled powder to thermo-mechanical processing. The intrinsic nitrides present within the alloy significantly reduce grain growth during thermo-mechanical processing, resulting in formed metal products of high strength and improved ductility.

摘要翻译： 一种通过在导致形成本征氮化物的条件下通过冷冻金属粉末制造高强度纳米相金属合金粉末的方法，以及通过对氮化冷冻粉末进行热机械加工来生产高强度金属制品的方法。 存在于合金中的固有氮化物在热机械加工期间显着降低晶粒生长，导致形成的高强度和延展性的金属产品。