Influence of Fe Content of Ti-Mn-Fe Alloys on Phase Constitution and Heat Treatment Behavior
Influence of Fe Content of Ti-Mn-Fe Alloys on Phase Constitution and Heat Treatment Behavior
复制标题
Ti-Mn-Fe合金Fe含量对相组成及热处理行为的影响
DOI：
10.4028/www.scientific.net/msf.706-709.1893
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发表时间：
2012
期刊：
影响因子：
--
通讯作者：
M. Niinomi
中科院分区：
文献类型：
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作者：
M. Ikeda;M. Ueda;T. Kinoshita;M. Ogawa;M. Niinomi
如果铁可以部分替代锰，那么钛锰铁合金的成本将低于钛锰合金。此外，从元素策略的情况来看，使用铁作为β稳定元素比使用锰更合适。在本研究中，取4.26作为价电子与原子的平均数e/a，选择Fe和Mn的成分在4.26作为e/a，通过测量电阻率、维氏硬度和X射线衍射仪研究了Fe对所选的Ti-Mn-Fe合金中Fe的影响。在固溶处理和水淬态10Mn合金中，发现了β相和非热欧米伽相，而在8.7Mn-1Fe、6.1Mn-3Fe和3.5Mn-5Fe合金中只发现了β相。在光学显微镜下观察到所有合金中都有等轴β晶相。除了5Fe合金的维氏硬度外，所有的Ti-Mn-Fe合金在室温和液氮温度下的电阻率和维氏硬度都相对不变。在773K时效过程中，只有3.5Mn-5Fe合金析出了等温欧米伽相，而其他合金只析出了α相。
If Mn could be partly substituted by Fe, Ti-Mn-Fe alloys would be less costly than Ti-Mn alloys. Furthermore, the use of iron as a beta-stabilizing element is more suitable than the use of manganese from a situation of an element strategy. In this study, 4.26 was admitted as the average ratio of valence electrons to atoms, e/a. The compositions of Mn and Fe were chosen under 4.26 as e/a. We investigated the influence Fe in selected Ti-Mn-Fe alloys by performing electrical resistivity, Vickers hardness, and X-ray diffraction measurements. In solution-treated and water-quenched 10Mn alloy, the beta and athermal omega phases were identified, while only the beta phase was identified in 8.7Mn-1Fe, 6.1Mn-3Fe, and 3.5Mn-5Fe alloys. In all alloys, equiaxial beta grains were observed by optical microscope. The resistivities at room and liquid-nitrogen temperatures and the Vickers hardness were relatively invariant across all Ti-Mn-Fe alloys, except for the Vickers hardness of the 5Fe alloy. During aging at 773 K, an isothermal omega phase precipitated in only the 3.5Mn-5Fe alloy, whereas only the alpha phase precipitated in the others.