Article ID | Journal | Published Year | Pages | File Type |
---|---|---|---|---|
1635715 | Transactions of Nonferrous Metals Society of China | 2015 | 11 Pages |
Abstract
A thermal-mechanical and micro-macro coupled finite element (FE) model for the hot extrusion process of large-scale thick-walled Inconel 625 pipe was developed based on the DEFORM-2D platform. Then, the influence rules of the key extrusion parameters on the average grain size and grain uniformity of the extruded pipe were revealed. The results show that with the increase of initial billet temperature, extrusion speed and friction coefficient, the grain uniformity is firstly improved and then deteriorated. Larger extrusion ratio leads to more uniform grain distribution. With the increase of initial billet temperature, the average grain size of the pipe first decreases and then increases. Additionally, larger extrusion ratio can bring smaller average grain size. The extrusion speed and friction coefficient have slight effects on the average grain size of the extruded pipe.
Related Topics
Physical Sciences and Engineering
Materials Science
Metals and Alloys
Authors
Li DANG, He YANG, Liang-gang GUO, Lei SHI, Jun ZHANG, Wen-da ZHENG,