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中南大学学报(自然科学版)

Journal of Central South University

第31卷    第1期    总第131期    2000年2月

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文章编号:1004-0609(2000)01-0051-04
Fe-Co-W-Mo型表面时效硬化合金的表面时效硬化特性(Ⅱ)
李忠厚,刘小萍,高    原,徐     重

(太原理工大学表面工程研究所,太原 030024)

摘 要: 利用双层辉光离子渗金属技术在工业纯铁表面形成高钴的Fe-Co-W-Mo型表面时效硬化合金。研究表明,这种表面合金具有时效硬化迅速、硬化能力强和抗回火软化能力强的特点。合金经1240℃固溶处理后于540℃时效5min,硬度就从固溶态的500HV0.2左 右上升到750HV0.2;时效40min,硬度上升到1200 HV0.2左右;于700℃回火2h,表层硬度仍保持720HV0.2以上。

 

关键字: 双辉技术;表面合金;时效硬化

Characteristics of surface age-hardening of Fe-Co-W-Mo surface age-hardening alloy (Ⅱ)
LI Zhong-hou, LIU Xiao-ping, GAO Yuan, XU Zhong

Research Institute of Surface Engineering, Taiyuan University of Technology, Taiyuan 030024, P.R.China

Abstract:A surface age-hardening alloy of Fe-Co-W-Mo was formed on the surface of ingot iron by the double glow plasma surface alloying technique (DGPSA). The experimental results showed that the surface age-hardening alloy possesses a very high rate of age-hardening, a very strong ability of age-hardening and a very strong ability against temper softening. The hardness of the surface age-hardening alloy is increased from 500 HV0.2 to 750HV0.2 after solution treatment followed by ageing for 5min at 540℃, increased to 1200HV0.2 after ageing for 40min in case of holding on the other heat treatment states above. And also the hardness of the surface age-hardening alloy exceeds 720HV0.2 after tempering for 2 h at 700℃.

 

Key words: double glow plasma surface alloying; surface ageing-alloy; age hardening

中南大学学报(自然科学版)
  ISSN 1672-7207
CN 43-1426/N
ZDXZAC
中南大学学报(英文版)
  ISSN 2095-2899
CN 43-1516/TB
JCSTFT
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