BR9610978A - Método para reduzir a formação de fase beta em forma de plaqueta primária em ligas de alsi contendo ferro, em particular em ligas de al-si-mn-fe - Google Patents

Método para reduzir a formação de fase beta em forma de plaqueta primária em ligas de alsi contendo ferro, em particular em ligas de al-si-mn-fe

Info

Publication number
BR9610978A
BR9610978A BR9610978-5A BR9610978A BR9610978A BR 9610978 A BR9610978 A BR 9610978A BR 9610978 A BR9610978 A BR 9610978A BR 9610978 A BR9610978 A BR 9610978A
Authority
BR
Brazil
Prior art keywords
phase
alloys
iron
type
beta phase
Prior art date
Application number
BR9610978-5A
Other languages
English (en)
Inventor
Lennart Backerud
Lars Arnberg
Guocai Chai
Original Assignee
Opticast Ab
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Opticast Ab filed Critical Opticast Ab
Publication of BR9610978A publication Critical patent/BR9610978A/pt

Links

Classifications

    • C—CHEMISTRY; METALLURGY
    • C22—METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
    • C22C—ALLOYS
    • C22C21/00—Alloys based on aluminium
    • C22C21/02—Alloys based on aluminium with silicon as the next major constituent
    • C—CHEMISTRY; METALLURGY
    • C22—METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
    • C22C—ALLOYS
    • C22C21/00—Alloys based on aluminium
    • C22C21/02—Alloys based on aluminium with silicon as the next major constituent
    • C22C21/04—Modified aluminium-silicon alloys

Landscapes

  • Chemical & Material Sciences (AREA)
  • Engineering & Computer Science (AREA)
  • Materials Engineering (AREA)
  • Mechanical Engineering (AREA)
  • Metallurgy (AREA)
  • Organic Chemistry (AREA)
  • Manufacture And Refinement Of Metals (AREA)
  • Refinement Of Pig-Iron, Manufacture Of Cast Iron, And Steel Manufacture Other Than In Revolving Furnaces (AREA)
  • Manufacture Of Metal Powder And Suspensions Thereof (AREA)
  • Sampling And Sample Adjustment (AREA)
  • Investigating And Analyzing Materials By Characteristic Methods (AREA)

Abstract

"MéTODO PARA REDUZIR A FORMAçãO DE FASE BETA EM FORMA DE PLAQUETA PRIMáRIA EM LIGAS DE ALSi CONTENDO FERRO, EM PARTICULAR EM LIGAS DE AL-Si-Mn-Fe". O ferro é uma impureza nociva nas ligas de alumínio, uma vez que ele faz com que as fases intermetálicas ricas em ferro duras e quebradiças se precipitem durante a solidificação. A fase mais nociva na microestrutura é a fase beta do tipo Al~ 5~FeSi, devido à sua forma de plaqueta. A presente invenção apresenta um método de produção de ligas de Al contendo ferro mediante o controle e a regulagem da trajetória de precipitação durante a solidificação de maneira tal que a precipitação das fases intermetálicas contendo Fe começa com a precipitação da fase hexagonal do tipo Al~ 8~Fe~ 2~Si. A presença da fase do tipo Al~ 8~Fe~ 2~Si. A presença da fase do tipo Al~ 8~Fe~ 2~Si resulta no fato que a fase beta não irá desenvolver a morfologia de plaqueta comum, porém irá se nuclear na fase do tipo Al~ 8~Fe~ 2~Si e cobri-la, que por sua vez tem uma morfologia menos nociva. Além disso, a invenção define o uso de análise térmica como um meio para controlar a morfologia dos precipitados.
BR9610978-5A 1995-10-10 1996-10-09 Método para reduzir a formação de fase beta em forma de plaqueta primária em ligas de alsi contendo ferro, em particular em ligas de al-si-mn-fe BR9610978A (pt)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
SE9503523A SE505823C2 (sv) 1995-10-10 1995-10-10 Förfarande för framställning av järninnehållande aluminiumlegeringar fria från flakformad fas av Al5FeSi-typ
PCT/SE1996/001254 WO1997013882A1 (en) 1995-10-10 1996-10-09 A METHOD OF REDUCING THE FORMATION OF PRIMARY PLATLET-SHAPED BETA-PHASE IN IRON CONTAINING AlSi-ALLOYS, IN PARTICULAR IN Al-Si-Mn-Fe ALLOYS

Publications (1)

Publication Number Publication Date
BR9610978A true BR9610978A (pt) 1999-12-28

Family

ID=20399769

Family Applications (1)

Application Number Title Priority Date Filing Date
BR9610978-5A BR9610978A (pt) 1995-10-10 1996-10-09 Método para reduzir a formação de fase beta em forma de plaqueta primária em ligas de alsi contendo ferro, em particular em ligas de al-si-mn-fe

Country Status (11)

Country Link
US (1) US6267829B1 (pt)
EP (1) EP0859868B1 (pt)
JP (1) JPH11513439A (pt)
AU (1) AU703703B2 (pt)
BR (1) BR9610978A (pt)
CA (1) CA2234094A1 (pt)
DE (1) DE69606060T2 (pt)
ES (1) ES2145489T3 (pt)
NO (1) NO981582L (pt)
SE (1) SE505823C2 (pt)
WO (1) WO1997013882A1 (pt)

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Also Published As

Publication number Publication date
EP0859868A1 (en) 1998-08-26
EP0859868B1 (en) 2000-01-05
US6267829B1 (en) 2001-07-31
NO981582D0 (no) 1998-04-07
SE9503523L (sv) 1997-04-11
CA2234094A1 (en) 1997-04-17
NO981582L (no) 1998-06-10
ES2145489T3 (es) 2000-07-01
JPH11513439A (ja) 1999-11-16
DE69606060D1 (de) 2000-02-10
WO1997013882A1 (en) 1997-04-17
DE69606060T2 (de) 2000-09-14
SE9503523D0 (sv) 1995-10-10
AU703703B2 (en) 1999-04-01
SE505823C2 (sv) 1997-10-13
AU7349896A (en) 1997-04-30

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