钢铁研究学报
鋼鐵研究學報
강철연구학보
JOURNAL OF IRON AND STEEL RESEARCH
2001年
2期
39-43
,共5页
王淑荷%郭建亭%赖万慧%李辉
王淑荷%郭建亭%賴萬慧%李輝
왕숙하%곽건정%뢰만혜%리휘
压缩性能%组织结构%Ni50Al20Fe30合金%硼%铌
壓縮性能%組織結構%Ni50Al20Fe30閤金%硼%鈮
압축성능%조직결구%Ni50Al20Fe30합금%붕%니
研究了微量硼和2 %Nb对铸造Ni50Al20Fe30合金组织及性能的影响。结果表明:微量硼的加入可以改善Ni50Al20Fe30合金的强度与塑性,最佳硼含量为0.02 %~0.05 %;此外,微量硼的加入影响该合金的共晶区,从而明显改变合金的微观组织形态。在硼含量为0.02 %时,该合金主要处于β相(NiAl)与γ相的共晶区,这对合金的室温塑性极为有利。添加2 %Nb可明显提高该合金的压缩屈服强度并改善塑性。在室温、650 ℃和1 000 ℃,该合金的压缩屈服强度分别提高30 %、59 %和36 %。
研究瞭微量硼和2 %Nb對鑄造Ni50Al20Fe30閤金組織及性能的影響。結果錶明:微量硼的加入可以改善Ni50Al20Fe30閤金的彊度與塑性,最佳硼含量為0.02 %~0.05 %;此外,微量硼的加入影響該閤金的共晶區,從而明顯改變閤金的微觀組織形態。在硼含量為0.02 %時,該閤金主要處于β相(NiAl)與γ相的共晶區,這對閤金的室溫塑性極為有利。添加2 %Nb可明顯提高該閤金的壓縮屈服彊度併改善塑性。在室溫、650 ℃和1 000 ℃,該閤金的壓縮屈服彊度分彆提高30 %、59 %和36 %。
연구료미량붕화2 %Nb대주조Ni50Al20Fe30합금조직급성능적영향。결과표명:미량붕적가입가이개선Ni50Al20Fe30합금적강도여소성,최가붕함량위0.02 %~0.05 %;차외,미량붕적가입영향해합금적공정구,종이명현개변합금적미관조직형태。재붕함량위0.02 %시,해합금주요처우β상(NiAl)여γ상적공정구,저대합금적실온소성겁위유리。첨가2 %Nb가명현제고해합금적압축굴복강도병개선소성。재실온、650 ℃화1 000 ℃,해합금적압축굴복강도분별제고30 %、59 %화36 %。
The effect of minor boron content and 2 %Nb on microstructure and mechanical properties of cast Ni50Al20Fe30 alloy has been investigated. The results show that minor B addition can improve the strength and the ductility of the Ni50Al20Fe30 alloy. The range of 0.02 %~0.05 % B is optimal for the alloy. The minor boron can influence the eutectic zone and microstructure of the alloy. The microstructure of alloy with 0.02 % B mainly consists of fine eutectic β (NiAl) and γ phases. This microstructure is favorable to ductility of the alloy at room temperature. The addition of 2 % Nb can evidently increase the yield strength and improve the ductility. The compressive yield strength of the alloy is increased about 30 %, 59 % and 36 % at room temperature, 650 ℃ and 1 000 ℃ respectively.