Effect of extrusion process on microstructure and mechanical properties of Ni3Al-B-Cr alloy during self-propagation high-temperature synthesis

被引：21

作者：

Sheng Li-yuan ^{[1
,2
]}

Xi Ting-fei ^{[1
]}

Lai Chen ^{[1
]}

Guo Jian-ting ^{[3
]}

Zheng Yu-feng ^{[2
]}

机构：

[1] PKU HKUST Shenzhen Hong Kong Inst, Shenzhen 518057, Peoples R China

[2] Peking Univ, Coll Engn, Beijing 100871, Peoples R China

[3] Chinese Acad Sci, Inst Met Res, Shenyang 110016, Peoples R China

来源：

TRANSACTIONS OF NONFERROUS METALS SOCIETY OF CHINA | 2012年 / 22卷 / 03期

关键词：

Ni3Al intermetallic compound; self-propagation high-temperature synthesis; extrusion; microstructure; mechanical properties; COMBUSTION SYNTHESIS; GRAIN-SIZE; INTERMETALLICS; ALUMINIDES; BOUNDARIES; DUCTILITY; NICKEL;

D O I：

10.1016/S1003-6326(11)61203-X

中图分类号：

TF [冶金工业];

学科分类号：

0806 ;

摘要：

The well-densified Ni3Al-0.5B-5Cr alloy was fabricated by self-propagation high-temperature synthesis and extrusion technique. Microstructure examination shows that the synthesized alloy has fine microstructure and contains Ni3Al, Al2O3, Ni3B and Cr3Ni2 phases. Moreover, the self-propagation high-temperature synthesis and extrusion lead to great deformation and recrystallization in the alloy, which helps to refine the microstructure and weaken the misorientation. In addition, the subsequent extrusion procedure redistributes the Al2O3 particles and eliminates the gamma-Ni phase. Compared with the alloy synthesized without extrusion, the Ni3Al-0.5B-5Cr alloy fabricated by self-propagation high-temperature synthesis and extrusion has better room temperature mechanical properties, which should be ascribed to the microstructure evolution.

引用

页码：489 / 495

页数：7

共 23 条

[1] Nickel and iron aluminides: An overview on properties, processing, and applications [J].

Deevi, SC ;

Sikka, VK .

INTERMETALLICS, 1996, 4 (05) :357-375

[2] Modelling the kinetics of strain induced precipitation in Nb microalloyed steels [J].

Dutta, B ;

Palmiere, EJ ;

Sellars, CM .

ACTA MATERIALIA, 2001, 49 (05) :785-794

[3] INTRINSIC DUCTILITY AND ENVIRONMENTAL EMBRITTLEMENT OF BINARY NI3AL [J].

GEORGE, EP ;

LIU, CT ;

POPE, DP .

SCRIPTA METALLURGICA ET MATERIALIA, 1993, 28 (07) :857-862

[4] Microstructure and mechanical properties of Ni3Al and Ni3Al-1B alloys fabricated by SHS/HE [J].

Guo, J. T. ;

Sheng, L. Y. ;

Xie, Y. ;

Zhang, Z. X. ;

Ovcharenko, V. E. ;

Ye, H. Q. .

INTERMETALLICS, 2011, 19 (02) :137-142

[5] Synthesis and sintering of Ni3Al intermetallic compound by combustion synthesis process [J].

Hibino, A ;

Matsuoka, S ;

Kiuchi, M .

JOURNAL OF MATERIALS PROCESSING TECHNOLOGY, 2001, 112 (01) :127-135

[6] The mechanism of nanocrystalline structure formation in Ni3Al during severe plastic deformation [J].

Korznikov, AV ;

Tram, G ;

Dimitrov, O ;

Korznikova, GF ;

Idrisova, SR ;

Pakiela, Z .

ACTA MATERIALIA, 2001, 49 (04) :663-671

[7]

LEBRAT JP, 1993, COMBUST SCI TECHNOL, V88, P211

[8] EFFECT OF BORON ON GRAIN-BOUNDARIES IN NI3AL [J].

LIU, CT ;

WHITE, CL ;

HORTON, JA .

ACTA METALLURGICA, 1985, 33 (02) :213-229

[9] HISTORY AND RECENT DEVELOPMENTS IN SHS [J].

MERZHANOV, AG .

CERAMICS INTERNATIONAL, 1995, 21 (05) :371-379

[10] COMBUSTION SYNTHESIS OF ADVANCED MATERIALS .1. REACTION PARAMETERS [J].

MOORE, JJ ;

FENG, HJ .

PROGRESS IN MATERIALS SCIENCE, 1995, 39 (4-5) :243-273

← 1 2 3 →