TUNING THE MECHANICAL PROPERTIES OF HIGH-DENSITY POLYETHYLENE BY ECAE PROCESS

被引：0

作者：

Fetecau, Catalin ^{[1
]}

Stan, Felicia ^{[1
]}

Sandu, Laurentiu ^{[1
]}

Susac, Florin ^{[1
]}

机构：

[1] Dunarea de Jos Univ Galati, Galati, Romania

来源：

PROCEEDINGS OF THE ASME 10TH INTERNATIONAL MANUFACTURING SCIENCE AND ENGINEERING CONFERENCE, 2015, VOL 1 | 2015年

关键词：

CHANNEL ANGULAR EXTRUSION; FINITE-ELEMENT-ANALYSIS; PLASTIC-DEFORMATION MECHANISM; MATERIAL FLOW; BEHAVIOR; YIELD; POLYPROPYLENE; ORIENTATION; FRACTURE; TEXTURE;

D O I：

暂无

中图分类号：

T [工业技术];

学科分类号：

08 ;

摘要：

This paper investigates the ability of the equal channel angular extrusion (ECAE) process to induce morphological changes and hence tune the mechanical properties of high-density polyethylene (HDPE). In this study, differential scanning calorimetry (DSC), compression and cylindrical macro-indentation tests have been used to investigate the evolution of the mechanical properties of HDPE processed by ECAE up to four passes via route B-C, i.e. counter clockwise 900 billet rotation about its longitudinal axis. It was found that the ECAE process induces significant plastic deformations with changes in the crystalline structure. The ECAE process increased the HDPE crystallinity by 10 to 15%. The number of ECAE passes has a significant effect on the magnitude of the mechanical properties especially on the elastic modulus and yield stress. Young's modulus and yield strength decreased with increasing the number of ECAE passes and reached a stationary state after the third pass.

引用

收藏

页数：8

相关论文

共 32 条

[1] A computational study of die geometry and processing conditions effects on equal channel angular extrusion of a polymer [J].

Aour, B. ;

Zairi, F. ;

Nait-Abdelaziz, M. ;

Gloaguen, J. M. ;

Rahmani, O. ;

Lefebvre, J. M. .

INTERNATIONAL JOURNAL OF MECHANICAL SCIENCES, 2008, 50 (03) :589-602

[2] Numerical investigation on equal channel angular extrusion process of polymers [J].

Aour, B. ;

Zairi, F. ;

Gloaguen, J. M. ;

Nait-Abdelaziz, M. ;

Lefebvre, J. M. .

COMPUTATIONAL MATERIALS SCIENCE, 2006, 37 (04) :491-506

[3] Experimental and numerical study of ECAE deformation of polyolefins [J].

Aour, B. ;

Zairi, F. ;

Boulahia, R. ;

Nait-Abdelaziz, M. ;

Gloaguen, J. M. ;

Lefebvre, J. M. .

COMPUTATIONAL MATERIALS SCIENCE, 2009, 45 (03) :646-652

[4] Dislocation density-based modeling of deformation behavior of aluminium under equal channel angular pressing [J].

Baik, SC ;

Estrin, Y ;

Kim, HS ;

Hellmig, RJ .

MATERIALS SCIENCE AND ENGINEERING A-STRUCTURAL MATERIALS PROPERTIES MICROSTRUCTURE AND PROCESSING, 2003, 351 (1-2) :86-97

[5] Product yield for ECAE processing [J].

Barber, RE ;

Dudo, T ;

Yasskin, PB ;

Hartwig, KT .

SCRIPTA MATERIALIA, 2004, 51 (05) :373-377

[6] Influence of molecular parameters on high-strain deformation of polyethylene in the plane-strain compression. Part I. Stress-strain behavior [J].

Bartczak, Z ;

Kozanecki, M .

POLYMER, 2005, 46 (19) :8210-8221

[7] Analytical modeling of material flow in equal channel angular extrusion (ECAE) [J].

Beyerlein, IJ ;

Tomé, CN .

MATERIALS SCIENCE AND ENGINEERING A-STRUCTURAL MATERIALS PROPERTIES MICROSTRUCTURE AND PROCESSING, 2004, 380 (1-2) :171-190

[8] Deformation behaviour and mechanical properties of polypropylene processed by equal channel angular extrusion: Effects of back-pressure and extrusion velocity [J].

Boulahia, R. ;

Gloaguen, J. M. ;

Zairi, F. ;

Nait-Abdelaziz, M. ;

Seguela, R. ;

Boukharouba, T. ;

Lefebvre, J. M. .

POLYMER, 2009, 50 (23) :5508-5517

[9] VARIATION OF YIELD STRESS WITH ORIENTATION IN ORIENTED POLYETHYLENE [J].

BURNAY, SG ;

GROVES, GW .

BRITISH POLYMER JOURNAL, 1978, 10 (01) :30-34

[10] Fibre fracture during equal-channel angular extrusion of short fibre-reinforced thermoplastics [J].

Creasy, TS ;

Kang, YS .

JOURNAL OF MATERIALS PROCESSING TECHNOLOGY, 2005, 160 (01) :90-98

← 1 2 3 4 →