热诱发马氏体对CoAl和CoNi合金形状记忆效应的作用（英文）
发布时间：2019-02-24 09:37
【摘要】：为了明确热HCP马氏体对CoAl和CoNi合金形状记忆效应的作用,研究CoAl和CoNi合金形状记忆效应(SME)与应力诱发马氏体和热HCP马氏体之间的关系。采用原位金相观察合金深冷前后热诱发马氏体的变化,并研究其对应力诱发马氏体和形状记忆效应的影响。结果表明,CoAl和CoNi合金的形状记忆效应都来源于应力诱发HCP马氏体,热马氏体对两者形状记忆效应的贡献都是强化基体。CoAl合金形状记忆效应高于CoNi合金的原因是Al原子对基体更强的固溶强化作用导致CoAl合金基体强度高于CoNi合金强度。
[Abstract]:In order to clarify the effect of hot HCP martensite on shape memory effect in CoAl and CoNi alloys, the relationship between the shape memory effect (SME) and stress-induced martensite and thermal HCP martensite in CoAl and CoNi alloys was studied. In situ metallography was used to observe the changes of thermal induced martensite before and after cryogenic, and to study the effect of the corresponding force on the effect of martensite and shape memory. The results show that the shape memory effect of both CoAl and CoNi alloys originates from stress-induced HCP martensite. The contribution of hot martensite to the shape memory effect of both alloys is the strengthening of matrix. The reason that the shape memory effect of CoAl alloy is higher than that of CoNi alloy is that the matrix strength of CoAl alloy is higher than that of CoNi alloy due to the stronger solution strengthening effect of Al atom on the matrix.
【作者单位】： 四川大学制造科学与工程学院;
【基金】：Projects(51171123,51271128)supported by the National Natural Science Foundation of China
【分类号】：TG139.6
本文编号：2429425
[Abstract]:In order to clarify the effect of hot HCP martensite on shape memory effect in CoAl and CoNi alloys, the relationship between the shape memory effect (SME) and stress-induced martensite and thermal HCP martensite in CoAl and CoNi alloys was studied. In situ metallography was used to observe the changes of thermal induced martensite before and after cryogenic, and to study the effect of the corresponding force on the effect of martensite and shape memory. The results show that the shape memory effect of both CoAl and CoNi alloys originates from stress-induced HCP martensite. The contribution of hot martensite to the shape memory effect of both alloys is the strengthening of matrix. The reason that the shape memory effect of CoAl alloy is higher than that of CoNi alloy is that the matrix strength of CoAl alloy is higher than that of CoNi alloy due to the stronger solution strengthening effect of Al atom on the matrix.
【作者单位】： 四川大学制造科学与工程学院;
【基金】：Projects(51171123,51271128)supported by the National Natural Science Foundation of China
【分类号】：TG139.6
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1 胡正飞,吴杏芳,梨秀球,王春旭;高CoNi合金钢中二次碳化物的析出与转化[J];金属学报;2001年04期
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