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金属学报  1994, Vol. 30 Issue (11): 515-520    
  论文 本期目录 | 过刊浏览 |
硼对Fe_3Al合金力学性能和显微组织的影响
殷为民;郭建亭;胡壮麒
中国科学院金属研究所
EFFECT OF BORON ON MECHANICAL PROPERTIES AND MICROSTRUCTURE OF Fe_3Al ALLOYS
YIN Weimin;GUO Jianting; HU Zhuangqi (Institute of Metal Research; Chinese Academy of Sciences;Shenyang)(Manuscript received 24 November;1993; in revised form 30 March; 1994)
引用本文:

殷为民;郭建亭;胡壮麒. 硼对Fe_3Al合金力学性能和显微组织的影响[J]. 金属学报, 1994, 30(11): 515-520.
, , . EFFECT OF BORON ON MECHANICAL PROPERTIES AND MICROSTRUCTURE OF Fe_3Al ALLOYS[J]. Acta Metall Sin, 1994, 30(11): 515-520.

全文: PDF(556 KB)  
摘要: 本文研究了不同硼含量对Fe-28Al-1.94Cr合金组织结构和室温、高温力学性能的影响.加入0.038at.-%B后,有细小的(Fe,Cr)_2B相析出,随着硼含量增加,析出相增多增大,加入1.18at.-%B后,析出相变成网络状.0.038-0.22at.-%B可明显改善合金的塑性和强度,0.038at.-%B使合金压缩屈服强度由532MPa提高到678MPa,塑性由15%提高到25%,过量的硼不但降低了合金的塑性,也使强度明显下降.600℃时,较低的硼含量对塑性有利,而较高的硼含量则可以提高高温强度.
关键词 Fe_3Al力学性能组织结构    
Abstract:Effect of B addition on the microstructure and mechanical properties of Fe-28Al-1. 94Cr alloy was investigated. In the alloy containing 0.038at.-%B, some fine (Fe, Cr)_2 B particles were found to precipitate, and these were tending in quantity and size as B content increasing. When B was up to 1. 18 at.-%, (Fe, Cr)_2 B precipitated in the form of network. Addition of B ranged 0.038 to 0.22at.-% into Fe_3Al alloy may remarkably improve the room temperature ductility and strength. The alloy containing 0.038at.-%B makes the increase of its compressive yield strength from 532 to 678 MPa, and its ductility from 15 to 25%. If the alloy is in excess of B, saying 1.18at.-%, not only reduction of ductility but also decrease of strength will be obvious. Less B in the alloy may be beneficial to its ductility at elevated temperature up to 600℃, while more B may improve its high temperature strength. Correspondent:GUO Jianting, professor,(Institute of Metal Research, Chinese Academy of Sciences, Shenyang110015)
Key words boron    Fe_3Al    mechanical property    microstructure
收稿日期: 1994-11-18     
基金资助:国家自然科学基金
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