太原科技大学学报
太原科技大學學報
태원과기대학학보
JOURNAL OF TAIYUAN UNIVERSITY OF SCIENCE AND TECHNOLOGY
2011年
4期
291-295
,共5页
潘忠明%闫志杰%党淑娥%胡勇
潘忠明%閆誌傑%黨淑娥%鬍勇
반충명%염지걸%당숙아%호용
非晶合金%轧制%晶化速率%晶化动力学
非晶閤金%軋製%晶化速率%晶化動力學
비정합금%알제%정화속솔%정화동역학
amorphous alloy%rolling%rate of crystallization%crystallization kinetics
通过线性DSC实验研究了轧制对Zr60Al15Ni25大块非晶合金晶化动力学的影响。实验结果表明,Zr60Al15Ni25非晶合金在轧制塑性变形过程中,随着变形量的增加,热稳定性降低。Zr60Al15Ni25块体非晶合金轧制后原子组态的变化主要影响晶化的形核阶段,变形量较低时(20%)合金原子组态向无序方向发展,导致晶化速率变慢,晶化变得比较困难。随着轧制的进一步增加,合金原子的无序性降低,晶化速率又逐渐提高,从而使其在随后加热过程中的晶化变得比较容易。
通過線性DSC實驗研究瞭軋製對Zr60Al15Ni25大塊非晶閤金晶化動力學的影響。實驗結果錶明,Zr60Al15Ni25非晶閤金在軋製塑性變形過程中,隨著變形量的增加,熱穩定性降低。Zr60Al15Ni25塊體非晶閤金軋製後原子組態的變化主要影響晶化的形覈階段,變形量較低時(20%)閤金原子組態嚮無序方嚮髮展,導緻晶化速率變慢,晶化變得比較睏難。隨著軋製的進一步增加,閤金原子的無序性降低,晶化速率又逐漸提高,從而使其在隨後加熱過程中的晶化變得比較容易。
통과선성DSC실험연구료알제대Zr60Al15Ni25대괴비정합금정화동역학적영향。실험결과표명,Zr60Al15Ni25비정합금재알제소성변형과정중,수착변형량적증가,열은정성강저。Zr60Al15Ni25괴체비정합금알제후원자조태적변화주요영향정화적형핵계단,변형량교저시(20%)합금원자조태향무서방향발전,도치정화속솔변만,정화변득비교곤난。수착알제적진일보증가,합금원자적무서성강저,정화속솔우축점제고,종이사기재수후가열과정중적정화변득비교용역。
The influences of rolling on the crystallization kinetics of rolled Zr60Al15Ni25 bulk metallic glass are investigated by means of linear differential scanning calorimetry(DSC) in the mode of continuous heating.It is found that the thermal stability of Zr60Al15Ni25 decreases with the increasing deformation.The atomic configuration of Zr60Al15Ni25 alloy in the rolling deformation primarily affects the nucleation stage of crystallization.When the deformation is low(20%),the atomic configuration of Zr60Al15Ni25 alloy will develop towards disorder,which makes the rate of crystallization slower and the atomic disorder of the alloy gets degraded with the continuing deformation.The rate of crystallization will be gradually improved with the further rolling and the crystallization of the alloy will get easier in the coming heating process.