Texture control for high formability of ferritic stainless steel by combined processing of ECAP and cold-rolling

ECAP和冷轧联合加工实现铁素体不锈钢高成形性的织构控制

• 批准号: 22560741
• 负责人: MIYAMOTO Hiroyuki
• 金额: $ 2.91万
• 依托单位: Doshisha University
• 依托单位国家: 日本
• 项目类别: Grant-in-Aid for Scientific Research (C)
• 财政年份: 2010
• 资助国家: 日本
• 起止时间: 2010 至 2012
• 项目状态: 已结题
• 来源: https://kaken.nii.ac.jp/grant/KAKENHI-PROJECT-22560741/
• 关键词: 強ひずみ加工; 集合組織; ステンレス鋼; リジング; ステンレス鋼板; 成形性; ＥＣＡＰ; 加工性

Equal-channel angular pressing (ECAP) was applied to 16mass%Cr steel sheets for one pass prior to cold rolling in order to improve formability and alleviate ridging of the sheets. Effect of channel angle of ECAP (90° and 120°) on the deformation microstructure and the subsequent recrystallization was focused. One-pass ECAP indeed modified the cold-rolled microstructures, texture and subsequent recrystallization as compared with that in cold rolling alone. In particular, grain-scale shear bands were introduced during ECAP in otherwise hard-to-recrystallize <001>//ND grains by ECAP, and they facilitated the recrystallization. However, the effect of reducing the channel angle from 120°to 90°on the recrystallization and the formability was limited in spite of higher shear strain imposed on the sheets.

采用等距角压（ECAP）技术对16质量%Cr钢板进行冷轧前一道次等径角压，以提高成形性能，减轻钢板起皱。重点研究了ECAP通道角（90°和120°）对变形组织及后续再结晶的影响。与单独冷轧相比，一次ECAP确实改善了冷轧组织、织构和随后的再结晶。ECAP在<001>//ND晶粒中引入了晶粒尺度的剪切带，促进了再结晶的发生。然而，将通道角从120°减小到90°对再结晶和成形性能的影响有限，尽管施加在板材上的剪切应变较高。

项目成果

Facilitated recrystallization of the hard-to-recrystallize structure in 16% Cr steel sheets by one-pass ECAP prior to cold rolling

促进%20再结晶%20of%20the%20难再结晶%20结构%20in%2016%%20Cr%20steel%20sheets%20by%20one-pass%20ECAP%20prior%20to%20cold%20rolling

• DOI: 10.4028/www.scientific.net/msf.702-703.607
• 发表时间: 2012
• 期刊: Materials Science Forum
• 作者: 宮本博之;T.Xiao;上野谷敏之
• 通讯作者: 上野谷敏之

ＥＣＡＰ・圧延複合工程におけるフェライト系ステンレス鋼板の成形性と集合組織の形成機構

ECAP/轧制联合工艺铁素体不锈钢板的成形性能和织构形成机制

• 发表时间: 2012
• 作者: 仁村将次;佐久間克幸;庄子習一;水野潤;篠木竜士
• 通讯作者: 篠木竜士

冷間圧延前にせん断変形を加えたフェライト系ステンレス鋼板の再結晶挙動と集合組織

冷轧前剪切变形铁素体不锈钢板的再结晶行为和织构

• 发表时间: 2010
• 作者: 宮本博之;上野谷敏之;肖童;秦野正治
• 通讯作者: 秦野正治