TENSILE AND FATIGUE PROPERTIES OF FE-MN-AL-C ALLOYS
TENSILE AND FATIGUE PROPERTIES OF FE-MN-AL-C ALLOYS
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DOI：
10.1007/bf01148807
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发表时间：
1989-03-01
影响因子：
4.5
通讯作者：
JAHN, MT
中科院分区：
文献类型：
--
作者：
CHANG, SC;HSIAU, YH;JAHN, MT
研究了三种固溶处理的Fe-29 Mn-9 Al-C（重量%）合金的拉伸性能和疲劳行为，这些合金具有不同的碳含量，导致奥氏体和铁素体相的体积分数不同。碳含量分别为1.06%、0.60%和0.26%，相应的奥氏体体积分数分别为100%、90%和45%。含碳量为1.06%的合金具有最好的拉伸性能，但其疲劳性能仅与含碳量较低的其他两种合金相当。含碳量为0.60%的合金屈服强度最低，但疲劳寿命略高于其他两种合金。含碳量为0.26%的合金具有最低的延伸率和中等强度，其疲劳寿命与其他两种合金相当。从裂纹萌生、裂纹扩展、晶粒尺寸、成分排列和成分分数等方面解释了它们的拉伸性能和疲劳行为。
The tensile properties and fatigue behaviour of three solution-treated Fe-29 Mn-9 Al-C (wt%) alloys having various carbon contents leading to different volume fractions of austenite and ferrite phases were investigated. The carbon contents were 1.06%, 0.60% and 0.26%, respectively and the corresponding volume fractions of austenite were 100%, 90% and 45%, respectively. The alloy having 1.06% carbon possessed the best tensile properties but its fatigue behaviour was only comparable to the other two alloys with lower carbon contents. The alloy having 0.60% carbon possessed the lowest yield strength, but its fatigue life was slightly better than other two alloys. The alloy having 0.26% C possessed lowest elongation and medium strength, and its fatigue life was comparable to the other two alloys. Their tensile properties and fatigue behaviour were explained in terms of crack initiation, crack propagation, grain size, constituent arrangement and constituent fraction.