TY - CHAP

T1 - Effects of interfacial reactions during solidification on mechanical properties in short fiber reinforced AlSi12CuMgNi composites

AU - Huang, Yuanding

AU - Hort, Norbert

AU - Dieringa, Hajo

AU - Kainer, Karl

N1 - Conference code: 135

PY - 2006

Y1 - 2006

N2 - Short fiber reinforced AlSi12CuMgNi composites have real applications as engine components in automobile industry. The addition of short fibers can raise the interfacial reactions between the fiber and matrix during casting. The reaction products can change the composition and further alter the physical metallurgy of matrix, such as microstructure, aging behavior and mechanical properties. The presented work investigates the interfacial reactions in the Saffil®- and Kaowool®-fiber reinforced AlSi12CuMgNi composites. The interfacial reactions are analyzed using SEM and TEM techniques. The effects of fiber composition on the interfacial reaction will be discussed. It is shown that the interfacial reaction largely depends on the fiber composition, especially the content of SiO2 in the fiber. The interfacial reaction occurring during casting can drastically influence the subsequent mechanical behavior of the investigated composites. No ageing phenomena are noted in the Kaowool®-fiber reinforced AlSi12CuMgNi composite. However, a typical ageing peak can be observed in the Saffil®-fiber reinforced composite. The relationship between the interfacial reaction and mechanical behavior will be discussed based on the experimental results. The ageing hardening deteriorated due to the depletion of alloying element magnesium caused by the interfacial reaction.

AB - Short fiber reinforced AlSi12CuMgNi composites have real applications as engine components in automobile industry. The addition of short fibers can raise the interfacial reactions between the fiber and matrix during casting. The reaction products can change the composition and further alter the physical metallurgy of matrix, such as microstructure, aging behavior and mechanical properties. The presented work investigates the interfacial reactions in the Saffil®- and Kaowool®-fiber reinforced AlSi12CuMgNi composites. The interfacial reactions are analyzed using SEM and TEM techniques. The effects of fiber composition on the interfacial reaction will be discussed. It is shown that the interfacial reaction largely depends on the fiber composition, especially the content of SiO2 in the fiber. The interfacial reaction occurring during casting can drastically influence the subsequent mechanical behavior of the investigated composites. No ageing phenomena are noted in the Kaowool®-fiber reinforced AlSi12CuMgNi composite. However, a typical ageing peak can be observed in the Saffil®-fiber reinforced composite. The relationship between the interfacial reaction and mechanical behavior will be discussed based on the experimental results. The ageing hardening deteriorated due to the depletion of alloying element magnesium caused by the interfacial reaction.

KW - Hardness

KW - Heat treatment

KW - Interfacial reaction

KW - Microstructure

KW - Engineering

UR - http://www.scopus.com/inward/record.url?scp=33646527985&partnerID=8YFLogxK

M3 - Article in conference proceedings

AN - SCOPUS:33646527985

SN - 0873396251

SN - 9780873396257

T3 - TMS Annual Meeting

SP - 165

EP - 172

BT - Solidification Processing of Metal Matrix Composites - Rohatgi Honorary Symposium

A2 - Gupta, Nikkil

A2 - Hunt, Warren

PB - John Wiley & Sons Inc.

T2 - 135th TMS Annual Meeting 2006

Y2 - 12 March 2006 through 16 March 2006

ER -