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退火對Ni-W合金藥型罩組織與性能的影響
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Effect of Annealing on the Microstructure and Mechanical Properties of Nickel-Tungsten Alloy Liner for Shaped Charge
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    摘要:

    用電沉積方法制備了含鎢1.76%(質(zhì)量分數(shù))的Ni-W合金藥型罩。通過拉伸試驗對原始電鑄態(tài)和熱處理后樣品的力學性能進行了評價，并利用X射線衍射、透射電子顯微鏡、俄歇電子能譜等技術(shù)對原始電鑄態(tài)和熱處理后樣品的微觀結(jié)構(gòu)進行了分析。結(jié)果表明，通過電鑄技術(shù)制備的Ni-W合金藥型罩材料強度較高，晶粒細小并具有 (111)織構(gòu)。制備的Ni-W合金仍具有面心立方結(jié)構(gòu)，W固溶在Ni的晶格中。Ni-W合金藥型罩材料經(jīng)300 ℃退火后，晶粒發(fā)生異常長大，(111) 織構(gòu)轉(zhuǎn)變?yōu)?(220) 織構(gòu)。經(jīng)500 ℃退火后，由于硫在晶界的偏析，發(fā)生沿晶斷裂，嚴重影響了材料的力學性能

    Abstract:

    A Ni-1.76 wt%W alloy liner for shaped charge was prepared by means of electrodeposition. The microstructure of the as-deposited and as-annealed alloys was examined by X-ray diffraction, transmission electron microscope and Auger electron spectroscopy technique. Mechanical properties of alloys were evaluated by tensile tests. The results demonstrate that the electrodeposited alloy has high strength, fine grains and a strong (111) texture. The prepared Ni-W alloy still has fcc structure and W is solid solutioned in Ni lattice. By annealing at 300 °C, abnormal grain growth appears in the sample. (111) texture weakens and (220) texture tends to appear. At 500 °C, sulfur segregation at grain boundary has a detrimental effect on the tensile properties of the alloy.

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劉德榮,成生偉,羅 揚,田文懷.退火對Ni-W合金藥型罩組織與性能的影響[J].稀有金屬材料與工程,2013,42(3):629~633.[Liu Derong, Cheng Shengwei, Luo Yang, Tian Wenhuai. Effect of Annealing on the Microstructure and Mechanical Properties of Nickel-Tungsten Alloy Liner for Shaped Charge[J]. Rare Metal Materials and Engineering,2013,42(3):629~633.]
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  • 收稿日期:2012-03-21
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