Impression creep characterization of cast Al-7Si-0.3Mg alloy

被引：8

作者：

Rashno, S. ^{[1
]}

Ranjbar, Khalil ^{[1
]}

Reihanian, M. ^{[1
]}

机构：

[1] Shahid Chamran Univ Ahvaz, Fac Engn, Dept Mat Sci & Engn, Ahvaz, Iran

来源：

MATERIALS RESEARCH EXPRESS | 2019年 / 6卷 / 08期

关键词：

cast Al alloy; creep behavior; creep mechanism; impression creep; microstructure; AL-SI ALLOYS; INTERMETALLIC PHASES; ALUMINUM ALLOYS; BEHAVIOR; MICROSTRUCTURE; MG; IRON;

D O I：

10.1088/2053-1591/ab251b

中图分类号：

T [工业技术];

学科分类号：

08 ;

摘要：

The creep behavior of the as cast A356 (Al-7Si-0.3Mg) alloy is investigated by the impression creep test with a flat-ended cylindrical punch over a wide range of stress between 280 and 630 MPa and at the temperature range of 493 to 553 K. The tilt casting method is used to fabricate the cast A356 alloy. The microstructure of the alloy is characterized by the dendritic primary alpha-Al, the eutectic Si phase and the iron-rich intermetallics (alpha-AlFeSi and beta-AlFeSi). The stress exponent is found to be in the range of 6.1 to 7.6 and the activation energy is determined in the range of 134 to 152 kJ mol(-1). It is found that the self-diffusion climb controlled creep is the operative creep mechanism. No evidence of the threshold stress is observed for the present alloy.

引用

页数：11

共 50 条

[41] Impression Creep Characteristics of a Cast Mg Alloy
B. Kondori
R. Mahmudi
[J]. Metallurgical and Materials Transactions A, 2009, 40 : 2007 - 2015
[42] Effect of iron and combined iron and beryllium additions on the fracture toughness and microstructures of squeeze-cast Al-7Si-0.3Mg alloy
Murali, S
Trivedi, A
Shamanna, KS
Murthy, KSS
[J]. JOURNAL OF MATERIALS ENGINEERING AND PERFORMANCE, 1996, 5 (04) : 462 - 468
[43] Impression Creep Characteristics of a Cast Mg Alloy
Kondori, B.
Mahmudi, R.
[J]. METALLURGICAL AND MATERIALS TRANSACTIONS A-PHYSICAL METALLURGY AND MATERIALS SCIENCE, 2009, 40A (08): : 2007 - 2015
[44] An investigation on semi-solid Al-7Si-0.3Mg alloy produced by mechanical stirring
Haghayeghi, R
Zoqui, EJ
Halvaee, A
Emamy, M
[J]. JOURNAL OF MATERIALS PROCESSING TECHNOLOGY, 2005, 169 (03) : 382 - 387
[45] Gas Quenching during Age Hardening of the Aluminium Casting Alloy Al-7Si-0.3Mg
A. Rose
O. Kessler
F. Hoffmann
H.W. Zoch
[J]. 材料热处理学报, 2004, (05) : 498 - 501
[46] The effect of Sn additions on the semi-solid microstructure of an Al-7Si-0.3Mg alloy
Kliauga, AM
Ferrante, M
[J]. MATERIALS SCIENCE AND ENGINEERING A-STRUCTURAL MATERIALS PROPERTIES MICROSTRUCTURE AND PROCESSING, 2002, 337 (1-2): : 67 - 72
[47] Modeling of grain refinement: Part III. Al-7Si-0.3Mg aluminum alloy
Yao, X.
McDonald, S. D.
Dahle, A. K.
Davidson, C. J.
StJohn, D. H.
[J]. JOURNAL OF MATERIALS RESEARCH, 2008, 23 (05) : 1301 - 1306
[48] Heat treatment of Al-7Si-0.3Mg alloy previously inoculated with a new type of quaternary master alloy
Moldovan, P.
Popescu, Gabriela
Buţu, M.
[J]. UPB Scientific Bulletin, Series B: Chemistry and Materials Science, 2007, 69 (02): : 91 - 98
[49] HEAT TREATMENT OF Al-7Si-0.3Mg ALLOY PREVIOUSLY INOCULATED WITH A NEW TYPE OF QUATERNARY MASTER ALLOY
Moldovan, P.
Popescu, Gabriela
Butu, M.
[J]. UNIVERSITY POLITEHNICA OF BUCHAREST SCIENTIFIC BULLETIN SERIES B-CHEMISTRY AND MATERIALS SCIENCE, 2007, 69 (02): : 91 - 98
[50] Effect of oxide bifilms on the mechanical properties of cast Al-7Si-0.3Mg alloy and the roll of runner height after filter on their formation
Bozchaloei, Ghasem Eisaabadi
Varahram, Naser
Davami, Parviz
Kim, Shae Kwang
[J]. MATERIALS SCIENCE AND ENGINEERING A-STRUCTURAL MATERIALS PROPERTIES MICROSTRUCTURE AND PROCESSING, 2012, 548 : 99 - 105

← 1 2 3 4 5 →