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
2014年
6期
1690-1697
,共8页
王小娜%韩利战%顾剑锋
王小娜%韓利戰%顧劍鋒
왕소나%한리전%고검봉
NZ30K镁合金%析出动力学%微分等转变量法%连续升温转变%等温转变
NZ30K鎂閤金%析齣動力學%微分等轉變量法%連續升溫轉變%等溫轉變
NZ30K미합금%석출동역학%미분등전변량법%련속승온전변%등온전변
NZ30K-Mg alloy%precipitation kinetics%differential isoconversional method%continuous heating transformation%isothermal heating transformation
通过测量NZ30K镁合金在连续升温过程中的电阻变化分析其析出动力学。NZ30K镁合金在连续升温过程中有两种析出相出现，即β″相和β′相。通过Kissinger法和微分等转变量法得到NZ30K镁合金的析出动力学参数 Eα和Aα′，并确定析出量随时间与温度的变化以及NZ30K镁合金的析出序列，进一步得到连续升温转变曲线(CHT)及等温转变曲线(IHT)，以指导NZ30K镁合金的时效工艺。结果表明：等转变量法可用于计算NZ30K镁合金的析出动力学参数。
通過測量NZ30K鎂閤金在連續升溫過程中的電阻變化分析其析齣動力學。NZ30K鎂閤金在連續升溫過程中有兩種析齣相齣現，即β″相和β′相。通過Kissinger法和微分等轉變量法得到NZ30K鎂閤金的析齣動力學參數 Eα和Aα′，併確定析齣量隨時間與溫度的變化以及NZ30K鎂閤金的析齣序列，進一步得到連續升溫轉變麯線(CHT)及等溫轉變麯線(IHT)，以指導NZ30K鎂閤金的時效工藝。結果錶明：等轉變量法可用于計算NZ30K鎂閤金的析齣動力學參數。
통과측량NZ30K미합금재련속승온과정중적전조변화분석기석출동역학。NZ30K미합금재련속승온과정중유량충석출상출현，즉β″상화β′상。통과Kissinger법화미분등전변량법득도NZ30K미합금적석출동역학삼수 Eα화Aα′，병학정석출량수시간여온도적변화이급NZ30K미합금적석출서렬，진일보득도련속승온전변곡선(CHT)급등온전변곡선(IHT)，이지도NZ30K미합금적시효공예。결과표명：등전변량법가용우계산NZ30K미합금적석출동역학삼수。
The electrical resistivity of NZ30K-Mg alloy was measured at different heating rates during continuous heating to study the precipitation kinetics. Two kinds of metastable phases,β″andβ′, formed during the heating. Kissinger method and differential isoconversional method were employed to assess the precipitation kinetic parameters of NZ30K-Mg alloy, activation energy Eαand pre-exponential factor Aα′ . The fraction of transformation (α) and the precipitation sequence in NZ30K-Mg alloy were determined. Continuous heating transformation (CHT) and isothermal heating transformation (IHT) diagrams were further obtained for guiding the aging of NZ30K-Mg alloy. The analysis shows that the precipitation kinetic parameters of NZ30K-Mg alloy can be obtained accurately using isoconversional method.
