Crystallography of Zr poisoning of Al-Ti-B grain refinement using edge-to-edge matching model

被引：14

作者：

Huang Yuan-chun ^{[1
,2
]}

Xiao Zheng-bing ^{[1
,2
]}

Liu Yu ^{[1
,2
]}

机构：

[1] Cent S Univ, Sch Mech & Elect Engn, Changsha 410083, Hunan, Peoples R China

[2] Cent S Univ, Light Alloy Res Inst, Changsha 410012, Hunan, Peoples R China

来源：

JOURNAL OF CENTRAL SOUTH UNIVERSITY | 2013年 / 20卷 / 10期

关键词：

crystallography; Al-Ti-B; Zr; edge-to-edge matching model; poisoning mechanism; PART I; ORIENTATION RELATIONSHIPS; WIDMANSTATTEN CEMENTITE; ALUMINUM-ALLOYS; NUCLEATION; IMPURITIES; MECHANISM; TITANIUM; PLANES;

D O I：

10.1007/s11771-013-1778-2

中图分类号：

TF [冶金工业];

学科分类号：

0806 ;

摘要：

The mechanism of zirconium poisoning on the grain-refining efficiency of an Al-Ti-B based grain refiner was studied. The experiment was conducted by melting Al-5Ti-1B and Al-3Zr master alloys together. The edge-to-edge matching model was used to investigate and compare the orientation relationships between the binary intermetallic compounds present in the Al-Ti-B-Zr system. The results show that the poisoning effect probably results from the combination of Al3Zr with Al3Ti and the decreased amount of Ti solute, for Al3Ti particles have good crystallographic relationships with Al3Zr. Totally six orientation relationships may present between them, while they play vital roles in grain refinement. TiB2 particles appear to remain unchanged because of a bit large misfit. Only one orientation relationship may present between them to prevent Al3Zr phase from forming on the surface of TiB2, though TiB2 is agglomerated. The theoretical calculation agrees well with the experimental results. The edge-to-edge matching model is proved to be a useful tool for discovering the orientation relationships between phases.

引用

页码：2635 / 2642

页数：8

共 26 条

[1] Poisoning of grain refinement of some aluminium alloys [J].

Abdel-Hamid, AA ;

Zaid, AIO .

CURRENT ADVANCES IN MECHANICAL DESIGN AND PRODUCTION VII, 2000, :331-338

[2]

ABDELHAMID AA, 1989, Z METALLKD, V80, P643

[3]

Bollmann W., 2012, Crystal Defects and Crystalline Interfaces

[4] Grain refinement by Al-Ti-B alloys in aluminium melts: a study of the mechanisms of poisoning by zirconium [J].

Bunn, AM ;

Schumacher, P ;

Kearns, MA ;

Boothroyd, CB ;

Greer, AL .

MATERIALS SCIENCE AND TECHNOLOGY, 1999, 15 (10) :1115-1123

[5] Effect of growth restricting factor on grain refinement of aluminum alloys [J].

Chandrashekar, T. ;

Muralidhara, M. K. ;

Kashyap, K. T. ;

Rao, P. Raghothama .

INTERNATIONAL JOURNAL OF ADVANCED MANUFACTURING TECHNOLOGY, 2009, 40 (3-4) :234-241

[6] Grain refinement of aluminum alloys: Part I. The nucleant and salute paradigms - A review of the literature [J].

Easton, M ;

StJohn, D .

METALLURGICAL AND MATERIALS TRANSACTIONS A-PHYSICAL METALLURGY AND MATERIALS SCIENCE, 1999, 30 (06) :1613-1623

[7] FACTORS AFFECTING GRAIN REFINEMENT OF ALUMINUM USING TITANIUM AND BORON ADDITIVES [J].

JONES, GP ;

PEARSON, J .

METALLURGICAL TRANSACTIONS B-PROCESS METALLURGY, 1976, 7 (02) :223-234

[8] Identifying close-packed planes in complex crystal structures [J].

Kelly, P. M. ;

Ren, H. -P. ;

Qiu, D. ;

Zhang, M. -X. .

ACTA MATERIALIA, 2010, 58 (08) :3091-3095

[9] Edge-to-edge matching—The fundamentals [J].

P. M. Kelly ;

M. -X. Zhang .

Metallurgical and Materials Transactions A, 2006, 37 (3) :833-839

[10]

MARCANTONIO JA, 1970, J I MET, V98, P23

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