易切削鋼中夾雜物的納米壓痕表征

王毓男; 包燕平; 王敏

doi:10.13374/j.issn1001-053x.2014.07.008

易切削鋼中夾雜物的納米壓痕表征

doi: 10.13374/j.issn1001-053x.2014.07.008

王毓男^1,2, ,,
包燕平^1,2,
王敏³

1. 北京科技大學鋼鐵冶金新技術國家重點實驗室, 北京 100083;
2. 北京科技大學冶金與生態工程學院, 北京 100083;
3. 北京科技大學國家板帶生產先進裝備工程技術研究中心, 北京 100083

基金項目:

國家自然科學基金資助項目（51274029）；中國博士后科學基金資助項目（2012M510319）

詳細信息

通訊作者:
王毓男,E-mail:wangyunan123@yeah.net

中圖分類號: TG142.33
計量
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- 被引次數: 0
出版歷程
- 收稿日期: 2013-05-02
- 網絡出版日期: 2021-07-19

Nanoindentation characterization of non-metallic inclusions in free cutting steel

WANG Yu-nan^{1,2
, ,},
BAO Yan-ping^1,2,
WANG Min³

1. State Key Laboratory of Advanced Metallurgy, University of Science and Technology Beijing, Beijing 100083, China;
2. School of Metallurgical and Ecological Engineering, University of Science and Technology Beijing, Beijing 100083, China;
3. National Engineering Research Center of Flat Rolling Equipment, University of Science and Technology Beijing, Beijing 100083, China

摘要

摘要: 利用納米壓痕技術對鋼中BN、MnS、Al₂O₃、TiN等夾雜物進行納米壓痕表征，詳細討論了BN夾雜物對鋼的切削性能的改善作用，并分析了納米壓痕表征及宏觀硬度測量的誤差.研究表明：鑄態BN夾雜物硬度低于MnS夾雜物，鍛造態BN夾雜物硬度高于MnS夾雜物，三者均遠低于鋼基體；鑄態與鍛造態BN夾雜物均能在鋼中起到應力集中源、潤滑及包裹硬質點的作用，改善鋼的切削性能；納米壓痕表征及宏觀硬度測量均存在一定的誤差.
- 易切削鋼 /
- 非金屬夾雜物 /
- 納米壓痕 /
- 硬度 /
- 切削性能 /
- 氮化硼
Abstract: Inclusions in free cutting steel such as BN, MnS, Al₂O₃ and TiN were characterized by nanoindentation. The improvement of BN inclusions on the machinability of the steel was discussed. The error between nanoindentation and macrohardness measurement was analyzed. The hardness of BN inclusions in as-cast samples is lower than that of MnS inclusions, but BN inclusions after forging become harder than MnS, even though these three kinds of inclusions are far softer than the based metal. BN inclusions in as-cast samples and forged samples are stress concentration sources, lubricants and enclose hard particles, therefore improve the machinability of the steel. Nanoindentation characterization and macrohardness measurement have certain error.
- free cutting steel /
- non-metallic inclusions /
- nanoindentation /
- hardness /
- cutting performance /
- boron nitride