公开(公告)号：WO1997046725A1

公开(公告)日：1997-12-11

申请号：PCT/US1997009763

申请日：1997-06-04

Applicant: REYNOLDS METALS COMPANY

Inventor： REYNOLDS METALS COMPANY ,  SIRCAR, Subhasish

IPC: C22C21/00

CPC classification number: C22F1/04

Abstract: A method of improving the corrosion properties of an aluminum alloy product containing solid solution alloying elements depends on a rapid quench step (see process steps in the figure). This method of improvement includes the step of rapidly quenching the alloy product after it has been heated or hot deformed so as to maintain the alloying elements in solid solution to avoid microsegregation of solid solution alloying elements and minimize preferential sites for corrosion onset.

Abstract translation: 提供含有固溶体合金元素的铝合金产品的腐蚀性能的方法取决于快速淬火步骤（参见图中的工艺步骤）。 这种改进的方法包括在加热或热变形之后快速淬火合金产品的步骤，以便将合金元素保持在固溶体中，以避免固溶体合金元素的微观偏析并使腐蚀开始的优先位置最小化。

公开(公告)号：WO1998023783A1

公开(公告)日：1998-06-04

申请号：PCT/US1997019632

申请日：1997-10-31

Applicant: REYNOLDS METALS COMPANY

Inventor： REYNOLDS METALS COMPANY ,  SIRCAR, Subhasish

IPC: C22C21/00

CPC classification number: C22C21/003

Abstract: A free-machining alloy is disclosed containing bismuth, tin and indium. The free-machining constituents act as low melting point compounds for machining and are specially adapted for use in aluminum alloys such as AA6000 series and AA2000 series alloys. The bismuth, tin and indium are effective replacements for the lead and bismuth addition used previously to improve machinability.

Abstract translation: 公开了一种含有铋，锡和铟的自由加工合金。 自由加工成分用作机械加工的低熔点化合物，特别适用于铝合金如AA6000系列和AA2000系列合金。 铋，锡和铟是以前用于提高机械加工性的铅和铋添加剂的有效替代品。

公开(公告)号：WO1997046726A1

公开(公告)日：1997-12-11

申请号：PCT/US1997009764

申请日：1997-06-04

Applicant: REYNOLDS METALS COMPANY

Inventor： REYNOLDS METALS COMPANY ,  SIRCAR, Subhasish

IPC: C22C21/00

CPC classification number: C22C21/10 ,  C22C21/00 ,  C22F1/04 ,  C22F1/053

Abstract: An aluminum-based alloy composition having improved corrosion resistance and extrudability consists essentially of, in weight percent, an amount of copper up to about 0.03 %, between about 0.1 and 0.5 % manganese, between about 0.03 and 0.30 % titanium, between about 0.06 and 1.0 % zinc, an amount of iron up to about 0.50 %, between about 0.05 and 0.12 % Si, less than 0.01 % magnesium, less than 0.01 % nickel, up to 0.5 % chromium with the balance aluminum and incidental impurities. A process of making an aluminum alloy article having high corrosion resistance also is provided.

Abstract translation: 具有改善的耐腐蚀性和可挤出性的铝基合金组合物基本上以重量百分数计，铜的量高达约0.03％，约0.1至0.5％的锰，约0.03至0.30％的钛，约0.06至 1.0％的锌，至多约0.50％的铁，约0.05至0.12％的Si，小于0.01％的镁，小于0.01％的镍，至多0.5％的铬，余量为铝和附带的杂质。 还提供了具有高耐腐蚀性的铝合金制品的制造方法。

公开(公告)号：EP0958392A1

公开(公告)日：1999-11-24

申请号：EP97928866.0

申请日：1997-06-04

Applicant: REYNOLDS METALS COMPANY

Inventor： SIRCAR, Subhasish

IPC: C22C21 ,  C22F1

CPC classification number: C22F1/04

Abstract: A method of improving the corrosion properties of an aluminum alloy product containing solid solution alloying elements depends on a rapid quench step (see process steps in the figure). This method of improvement includes the step of rapidly quenching the alloy product after it has been heated or hot deformed so as to maintain the alloying elements in solid solution to avoid microsegregation of solid solution alloying elements and minimize preferential sites for corrosion onset.

公开(公告)号：EP1214456A1

公开(公告)日：2002-06-19

申请号：EP00946803.4

申请日：2000-07-12

Applicant: REYNOLDS METALS COMPANY

Inventor： SIRCAR, Subhasish

IPC: C22C21/00 ,  C22C21/04 ,  C22C21/08 ,  C22C21/12

CPC classification number: C22C21/003

Abstract: One free machining aluminum alloy includes bismuth as a free machining elemental constituent that functions as a discontinuity in the aluminum alloy matrix rather than a low melting point compound. Using bismuth in weight percents of the total composition ranging between 0.1 % and 3.0 % improves both machinability and mechanical properties. The bismuth can act as a substitute for another free machining constituent in a free machining aluminum alloy or can be added to an aluminum alloy to improve its machinability. Another free machining aluminum alloy has bismuth and tin as free machining constituents for improved machining. When using bismuth and tin, the bismuth ranges between 0.1 and 3.0 % by weight and the tin ranges between 0.1 and 1.5 % by weight.

公开(公告)号：EP1214456B1

公开(公告)日：2005-12-28

申请号：EP00946803.4

申请日：2000-07-12

Applicant: Reynolds Metals Company

Inventor： SIRCAR, Subhasish

IPC: C22C21/00 ,  C22C21/04 ,  C22C21/08 ,  C22C21/12

CPC classification number: C22C21/003

Abstract: One free machining aluminum alloy includes bismuth as a free machining elemental constituent that functions as a discontinuity in the aluminum alloy matrix rather than a low melting point compound. Using bismuth in weight percents of the total composition ranging between 0.1 % and 3.0 % improves both machinability and mechanical properties. The bismuth can act as a substitute for another free machining constituent in a free machining aluminum alloy or can be added to an aluminum alloy to improve its machinability. Another free machining aluminum alloy has bismuth and tin as free machining constituents for improved machining. When using bismuth and tin, the bismuth ranges between 0.1 and 3.0 % by weight and the tin ranges between 0.1 and 1.5 % by weight.

公开(公告)号：EP1034318A1

公开(公告)日：2000-09-13

申请号：EP98951930.1

申请日：1998-09-23

Applicant: REYNOLDS METALS COMPANY

Inventor： SIRCAR, Subhasish

IPC: C22F1/04 ,  C22C21/04

CPC classification number: C22C21/00

Abstract: An aluminum-based alloy composition having improved combinations of corrosion resistance, drawability, bendability and extrudability consists essentially of, in weight percent, not more than about 0.03 % copper, between about 0.1 and up to about 1.5 % manganese, between about 0.03 and about 0.35 % titanium, an amount of magnesium up to about 1.0 %, less than 0.01 % nickel, between about 0.06 and about 1.0 % zinc, an amount of zirconium up to about 0.3 %, amounts of iron and silicon up to about 0.50 %, up to 0.20 % chromium, with the balance aluminum and inevitable impurities. A process of making an aluminum alloy article having high corrosion resistance, drawability, bendability and hot deformability is also provided.

公开(公告)号：EP0907757A1

公开(公告)日：1999-04-14

申请号：EP97928867.0

申请日：1997-06-04

Applicant: REYNOLDS METALS COMPANY

Inventor： SIRCAR, Subhasish

IPC: C22C21 ,  C22F1

CPC classification number: C22C21/10 ,  C22C21/00 ,  C22F1/04 ,  C22F1/053

Abstract: An aluminum-based alloy composition having improved corrosion resistance and extrudability consists essentially of, in weight percent, an amount of copper up to about 0.03 %, between about 0.1 and 0.5 % manganese, between about 0.03 and 0.30 % titanium, between about 0.06 and 1.0 % zinc, an amount of iron up to about 0.50 %, between about 0.05 and 0.12 % Si, less than 0.01 % magnesium, less than 0.01 % nickel, up to 0.5 % chromium with the balance aluminum and incidental impurities. A process of making an aluminum alloy article having high corrosion resistance also is provided.