Shear Assisted Processing and Extrusion of Aluminum Alloy 7075 Tubing at High Speed

被引：6

作者：

Whalen, Scott ^{[1
]}

Reza-E-Rabby, Md ^{[1
]}

Wang, Tianhao ^{[1
]}

Ma, Xiaolong ^{[1
]}

Roosendaal, Timothy ^{[1
]}

Herling, Darrell ^{[1
]}

Overman, Nicole ^{[1
]}

Taysom, Brandon Scott ^{[1
]}

机构：

[1] Pacific Northwest Natl Lab, Richland, WA 99352 USA

来源：

LIGHT METALS 2021, 50TH EDITION | 2021年

基金：

美国能源部;

关键词：

Aluminum; 7075; ShAPE; Extrusion; Friction extrusion; HOT EXTRUSION;

D O I：

10.1007/978-3-030-65396-5_41

中图分类号：

O646 [电化学、电解、磁化学];

学科分类号：

081704 ;

摘要：

Conventional extrusion of aluminum alloy 7075 is limited to 1-2 m/min in order to avoid surface tearing and cracking. An emerging technique called Shear Assisted Processing and Extrusion (ShAPE) was used to extrude aluminum alloy 7075 tubing at a speed of 7.4 m/min without inducing surface defects. The faster extrusion speed is attributed to the unique flow characteristics inherent to the ShAPE process compared to conventional extrusion. Tubes with inner diameter of 10 mm, outer diameter of 12 mm, and length of 2 m were extruded at temperatures ranging from 340 to 466 degrees C. Tensile testing was performed per ASTM B557-15 with strain measured using digital image correlation. An ultimate tensile strength of 565 +/- 4.6 MPa, yield strength of 496 +/- 8.7 MPa, and elongation of 16.4 +/- 1.0% were measured for extrusions made at 362 degrees C and heat treated to a T6 condition with extended aging.

引用

页码：277 / 280

页数：4

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