為了加速開發多元素為主的高熵合金，本研究以相圖計算方法(CALPHAD)搭配高通量技術(High-throughput computation)，以Lever rule及Scheil model模擬鈷-鉻-鐵-鎳-釩高熵合金於凝固後的形成相。分析凝固之生成相為FCC單一相的計算結果，釩的比例大多都呈現偏低的狀況。只有在鎳元素含量較高時，生成FCC單一固溶相的釩元素含量才有稍微提升。Scheil model的計算結果指出此6組合金完全凝固時多以FCC為主要的相組成。
將電弧熔煉法製備的鑄態合金，以及1100 ℃高溫固溶處理的試片，以X光繞射儀(XRD)和掃描式電子顯微鏡搭配能量散射X射線譜(SEM/EDS)，檢視與驗證模擬計算之準確性。從各項結果分析，本研究中六個合金都是以FCC相為主，因實驗誤差而導致部分合金有Sigma介金屬相的析出。整體來說，實驗的結果與計算模擬相當吻合。密度測量結果說明六組合金皆與計算得出之理論密度接近，而介金屬相的成長將導致整體密度降低。本研究中合金的硬度皆比304不鏽鋼來的高，隨著釩元素比例的提高，硬度值也有隨之上升的趨勢，Sigma介金屬相析出的合金可使其硬度值明顯的提升。電化學腐蝕結果則顯示多產生孔蝕及晶界腐蝕之現象。

In order to accelerate the development of multi-element-based high-entropy alloys, in this research, we use the phase diagram calculation method (CALPHAD) with high-throughput computation, and adopt the Lever rule and Scheil model to simulate the formation phase of cobalt-chromium-iron-nickel-vanadium high-entropy alloy system after solidification. Analyzing the result of calculation that the solidified phase is the FCC single phase, the proportion of vanadium is mostly low. Only when the content of nickel is high, the content of vanadium in the single solid solution phase of FCC is slightly increased. The calculation results of Scheil model indicate that FCC is the main phase composition when the six combination gold is completely solidified.
The as-cast alloy prepared by the arc melting method and the test piece treated by high temperature heat treatment at 1100 ℃ are inspected, and verified by X-ray diffraction (XRD) and scanning electron microscope with energy scattering X-ray spectroscopy (SEM/EDS). In order to verify the accuracy of simulation calculation. From the analysis of various results, the six alloys in this study are mainly FCC phase, and some alloys have Sigma intermetallic phase precipitation due to experimental errors. On the whole, the experimental results are in good agreement with the calculation simulations. The density measurement results show that the six-component alloys are close to the calculated theoretical density, and the growth of the intermetallic phase will cause the overall density to decrease. The hardness of the alloy in this study is higher than that of 304 stainless steel. With the increase of the proportion of vanadium, the hardness value will also increase. The alloy precipitated by the Sigma intermetallic phase can significantly increase the hardness value.

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