Study of the thermal stability of phases in the Mg-Al system

被引：23

作者：

Czeppe, T ^{[1
]}

Zakulski, W ^{[1
]}

Bielanska, E ^{[1
]}

机构：

[1] Polish Acad Sci, Aleksander Krupkowski Inst Met & Mat Sci, PL-30059 Krakow, Poland

来源：

JOURNAL OF PHASE EQUILIBRIA | 2003年 / 24卷 / 03期

关键词：

D O I：

10.1361/105497103770330550

中图分类号：

O64 [物理化学（理论化学）、化学物理学];

学科分类号：

070304 ; 081704 ;

摘要：

A part of the Al-Mg phase diagram was studied in the range of composition between 48 and 61 at.% Al by DSC and SEM/EDS methods. The temperature ranges of stability of the beta, gamma, and epsilon, phases were considered. It was found that the congruent melting temperature of the beta phase was 450 +/- 1 degreesC. The Al content in that phase was determined to be 61 +/- 1 at.% Al at 420 degreesC. The upper temperature limit of the stability of the F phase was established to be 427 +/- 1 degreesC. The Al content changed from 54 at.% at 390 degreesC to 56 at.%, at 420 degreesC. The lower temperature limit of the epsilon phase formation was not determined, as a result of a slow epsilon = beta + gamma reaction. The hypothetical lambda or zeta phases were not found, but it was observed that decomposition of oxides might produce extra thermal effects.

引用

页码：249 / 254

页数：6

共 10 条

[1]

Donnadieu P, 1997, Z METALLKD, V88, P33

[2]

Donnadieu P, 1996, J PHYS I, V6, P1153, DOI 10.1051/jp1:1996121

[3]

Donnadieu P, 1998, PHILOS MAG A, V78, P893, DOI 10.1080/01418619808239963

[4] AN EXPERIMENTAL-TECHNIQUE FOR THE RAPID-DETERMINATION OF BINARY PHASE-DIAGRAMS - THE AL-MG SYSTEM [J].

GOEL, NC ;

CAHOON, JR ;

MIKKELSEN, B .

METALLURGICAL TRANSACTIONS A-PHYSICAL METALLURGY AND MATERIALS SCIENCE, 1989, 20 (02) :197-203

[5]

HANSEN M, 1958, CONSTITUTION BINARY, P105

[6]

HULTGREN R, 1973, SELECTED VALUES THER, P182

[7]

Liang P, 1998, Z METALLKD, V89, P536

[8]

Murray JL., 1982, B ALLOY PHASE DIAGRA, V3, P60, DOI [10.1007/BF02873413, DOI 10.1007/BF02873413]

[9]

SCHURMANN E, 1981, GIESSEREIFORSCHUNG, V33, P43

[10] Experimental investigation of the Mg-Al phase diagram from 47 to 63 at% Al [J].

Su, HL ;

Harmelin, M ;

Donnadieu, P ;

Baetzner, C ;

Seifert, HJ ;

Lukas, HL ;

Effenberg, G ;

Aldinger, F .

JOURNAL OF ALLOYS AND COMPOUNDS, 1997, 247 :57-65

← 1 →