热处理对Ti_(44)Ni_(47)Nb_9合金的组织和M_s点的影响
Variation of macrostructure and M_s of Ti_(44)Ni_(47)Nb_9 alloy with heat treatment
查看参考文献8篇
文摘
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系统研究了热处理对Ti44Ni47Nb9合金热轧棒材的组织和相变温度的影响.结果表明, Ti44Ni47Nb9合金在750^一950℃保温30 min淬火后,发生了回复和再结晶,合金由TiNi基体相、沿基体相晶界和亚晶界分布的β一Nb相以及少数(Ti,Nb)4Ni20氧化物相组成;退火后在基体相晶界和晶内分布的β-Nb相颗粒明显增多,氧化物相的数量也增加;淬火并时效后, p-Nb主要分布在基体相的晶界处,氧化物含量稍有增加.氧化物的存在和β一Nb相的析出使退火或淬火并时效后样品基体相中的Ni/Ti比值增大.慢冷或淬火后时效降低了合金M_s点,提高了马氏体相变的稳定性. |
其他语种文摘
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Effect of heat treatment on Ms and microstructure of hot rolled Ti44l\li47Nbg rods has been studied in detail by means of X-Ray, SEM, TEM, DSC. Microstructure of Ti44l\li47Nbg alloy quenched from 750 °C /30 min to 950 °C /30 min mainly consists of TiNi matrix phase and /3-Nb phase distributed at TiNi grain boundaries and sub-grain boundaries, and the amount of oxide (Ti, Nb^NiaO is very low, recovery and recrystallization were observed in matrix phase. The amount of /3-Nb at TiNi grain boundaries and inside grains obviously increases, and the oxide amount also rises for the annealed alloys; /3-Nb mainly distributes at TiNi grain boundaries, the amount of oxide slightly increases for the alloys aged after solution treatment. Slow cooling or aging after solution treatment increases Ni/Ti ratio in matrix phase, decreases M_s, and stabilizes martensite. |
来源
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材料研究学报
,2004,18(2):199-204 【核心库】
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关键词
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金属材料
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地址
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1.
东北大学, 沈阳, 110004
2.
中国科学院金属研究所
3.
成都军用舰船核动力高性能燃料及材料国防科技重点实验室, 成都军用舰船核动力高性能燃料及材料国防科技重点实验室
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语种
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中文 |
文献类型
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研究性论文 |
ISSN
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1005-3093 |
学科
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一般工业技术 |
基金
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军用舰船核动力高性能燃料及材料国防科技重点实验室基金
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军用舰船核动力高性能燃料及材料国防科技重点实验室基金
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文献收藏号
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CSCD:1637183
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