Microstructure and texture evolutions in AISI 1050 steel by flow forming

被引：7

作者：

Bedekar, Vikram ^{[1
]}

Pauskar, Praveen ^{[1
]}

Shivpuri, Rajiv ^{[2
]}

Howe, J. ^{[3
]}

机构：

[1] Timken Technol Ctr, N Canton, OH 44720 USA

[2] Ohio State Univ, Dept Ind Engn, Columbus, OH 43210 USA

[3] ORNL, High Temp Mat Lab, Oak Ridge, TN 37831 USA

来源：

11TH INTERNATIONAL CONFERENCE ON TECHNOLOGY OF PLASTICITY, ICTP 2014 | 2014年 / 81卷

关键词：

Flow forming; Dynamic recrystallization; Texture; Preferred orientation; Nanostructure; DEFORMATION; TUBES;

D O I：

10.1016/j.proeng.2014.10.333

中图分类号：

T [工业技术];

学科分类号：

08 ;

摘要：

Hot rolled and annealed AISI 1050 steel cylindrical coupons were flow formed at different levels of deformation (66% and 90% wall thickness reduction). TEM studies revealed development of ultra-fine (sub) grain cell structure due to severe plastic deformation. The transverse subgrain size changed from 10 m (beginning) to 300 nm (66% reduction) to 40 nm (90% reduction). An EBSD study revealed a decreased recrystallization fraction at 90% deformation compared to 66% deformation, caused by orientation pinning from the preferred orientation along {002} planes. No evidence of dislocation pinning or cracking was observed on any samples. The aim of the present work is to study the deformation behaviour and microstructural evolution during the conventional flow forming process. The effect of severe straining on structural changes and strengthening behaviour is also discussed. (C) 2014 The Authors. Published by Elsevier Ltd.

引用

页码：2355 / 2360

页数：6

共 10 条

[1] Microstructure evolution in ferritic stainless steels during large strain deformation [J].