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金属学报  1965, Vol. 8 Issue (3): 352-424    
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铁-锰-铝系复相铜中的β_(Mn)型相变
张彦生;王处义;师昌绪
THE FORMATION OF A β_Mn. TYPE PHASE IN SOME Fe-Mn-Al STEELS
CHANG YEN-SHEN;WANG CHU-YI;SHIH CHANG-HSU
引用本文:

张彦生;王处义;师昌绪. 铁-锰-铝系复相铜中的β_(Mn)型相变[J]. 金属学报, 1965, 8(3): 352-424.
, , . THE FORMATION OF A β_Mn. TYPE PHASE IN SOME Fe-Mn-Al STEELS[J]. Acta Metall Sin, 1965, 8(3): 352-424.

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摘要: 报道了以金相观察、X射线衍射、显微硬度、硬度、冲击试验等方法所研究的几个Fe-Mn-Al复相(δ+γ)钢(33—37%Mn,5—9%Al的基体)中的β_Mn型相交的试验结果。测定了βMn型相变的温度范围,观察了自δ铁素体及奥氏体中分解出βMn相的过程。并讨论了成分、热处理条件的影响。
Abstract:The formation of β_(Mn) type structure in several Fe-Mn-Al duplex steels with com-positions varying from 33 to 37% Mn and 5 to 9% Al has been systematically stud-ied by microscopic examination, X-ray diffraction analysis, microhardness indentation test,hardness measurement and impact test. The temperature range of transformation for (δ+γ) to β_(Mn) lies between 500°and1000℃. The lower temperature limit is lowered by the addition of Al and the upperlimit raised by Mn and Al. The morphology of β_(Mn) formed depends on the composition and heat treatment ofthe alloys. β_(Mn) needles are preferentially originated from δ/δ and δ/γ grain boundaries,ferrite grains, etc., and then grow into rods. At higher temperatures β_(Mn) forms inblocks along the δ/γ boundaries and later grows into δ-ferrite grains. A relief effect onthe polished surface has been observed after the formation of β_(Mn) needles and it is sug-gested that this β_(Mn) is formed by the bainitic transformation mechanism. It has beenfound that the impact value decreases and the hardness increases with increasing β_(Mn)content.
收稿日期: 1965-03-18     
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