(1. 南昌航空工業(yè)學(xué)院 材料科學(xué)與工程學(xué)院，南昌330063；
2. 北京航空材料研究院，北京100095)
摘 要: 基于動(dòng)態(tài)材料模型理論的加工圖技術(shù)被廣泛用于設(shè)計(jì)和優(yōu)化材料熱加工工藝中，以實(shí)現(xiàn)微觀組織和性能的控制。綜述動(dòng)態(tài)材料模型的相關(guān)理論，介紹基于動(dòng)態(tài)材料模型的穩(wěn)定變形區(qū)和失穩(wěn)變形區(qū)的各種判據(jù)及其物理含義，比較和分析各種判據(jù)的應(yīng)用情況及其有效性，對判據(jù)在某些情況下預(yù)測失敗的原因進(jìn)行分析，指出利用各種判據(jù)優(yōu)化材料熱加工工藝時(shí)的選用原則。
關(guān)鍵字: 動(dòng)態(tài)材料模型；加工圖；變形穩(wěn)定區(qū)判據(jù)；變形失穩(wěn)區(qū)判據(jù)；工藝優(yōu)化
dynamic material model
LI Zhen-xi2, CAO Chun-xiao2
（1. School of Materials Science and Engineering,
Nanchang Institute of Aeronautical Technology, Nanchang 330063, China;
2. Beijing Institute of Aeronautical Materials, Beijing 10095, China）
Abstract: The approach of processing maps based on dynamic material model (DMM) theory was widely applied to design and optimize materials hot working processes with the aim of realizing the control of microstructures and properties of hot worked materials. The theories with respect to DMM were reviewed, and various criterions for the occurrence of flow stabilities and instabilities as well as their physical meaning were introduced respectively. The application and validity of various criterions were compared and analyzed, and the reason for predicting failure of criterions under some situations were analyzed. In addition, the selecting principle of the criterions was proposed to precisely optimize materials hot working processes.
Key words: dynamic material model; processing map; deformation stability criterion; deformation instability criterion; hot working process optimization
