中国有色金属学报（英文版）
中國有色金屬學報（英文版）
중국유색금속학보（영문판）
TRANSACTIONS OF NONFERROUS METALS SOCIETY OF CHINA
2012年
4期
819-824
,共6页
伞星源%梁晓光%程莲萍%沈黎%朱心昆
傘星源%樑曉光%程蓮萍%瀋黎%硃心昆
산성원%량효광%정련평%침려%주심곤
铜%铜合金%冷轧%拉伸试验%层错能
銅%銅閤金%冷軋%拉伸試驗%層錯能
동%동합금%랭알%랍신시험%층착능
Cu%Cu alloys%cold-rolling%tensile tests%stacking fault energy
在液氮温度下(77 K)采用冷轧技术制备层错能分别为78、35和7mJ/m2的铜、Cu-2.2％A1和Cu-4.5％Al铜合金.X射线衍射分析表明,冷轧后样品的晶粒尺寸随着层错能的降低而降低,但微观应变、位错密度和孪晶密度则升高.室温拉伸实验表明,随着层错能的降低,铜合金的强度和塑性呈增加,说明降低层错能是一种能够同时提高冷轧铜合金强度和塑性的方法.
在液氮溫度下(77 K)採用冷軋技術製備層錯能分彆為78、35和7mJ/m2的銅、Cu-2.2％A1和Cu-4.5％Al銅閤金.X射線衍射分析錶明,冷軋後樣品的晶粒呎吋隨著層錯能的降低而降低,但微觀應變、位錯密度和孿晶密度則升高.室溫拉伸實驗錶明,隨著層錯能的降低,銅閤金的彊度和塑性呈增加,說明降低層錯能是一種能夠同時提高冷軋銅閤金彊度和塑性的方法.
재액담온도하(77 K)채용랭알기술제비층착능분별위78、35화7mJ/m2적동、Cu-2.2％A1화Cu-4.5％Al동합금.X사선연사분석표명,랭알후양품적정립척촌수착층착능적강저이강저,단미관응변、위착밀도화련정밀도칙승고.실온랍신실험표명,수착층착능적강저,동합금적강도화소성정증가,설명강저층착능시일충능구동시제고랭알동합금강도화소성적방법.
Cu,Cu-2.2％Al and Cu-4.5％Al with stacking fault energies (SFE) of 78,35 and 7 mJ/m2 respectively were processed by cold-rolling (CR) at liquid nitrogen temperature (77 K) after hot-rolling.X-ray diffraction measurements indicate that a decrease in SFE leads to a decrease in ctystallite size but increase in microstrain,dislocation and twin densities of the CR processed samples.Tensile tests at room temperature indicate that as the stacking fault energy decreases,the strength and ductility increase.The results indicate that decreasing stacking fault energy is an optimum method to improve the ductility without loss of strength.
