不銹鋼渦輪葉片鍛造之製程參數模擬分析

Analysis and Simulation of Process Parameters for Forging of Stainless Steel Turbine Blades

李榮顯(Rong-Shean Lee) ； 李驊登(HwapTeng Lee) ； 陳坤華(Kun-Hwa Chen) ； 顏志軒(Chih-Hsuan Yen) ； 武文龍(Wen-Lung Wu)

《鍛造》 9卷4期 (2000/11) Pp. 9-14

https://doi.org/10.29791/Forging.200011.0001

摘要

本文根據製程模擬與金相觀察所建立之關係。提出一個能預測出實際鍛件上金相的方法。研究包括胚料的熱傳實驗。恆溫鍛壓，非恆溫圓環及圓柱壓縮，並與模擬比對，進而模擬製程參數較複複雜的輥鍛及壓鍛製程。一方面將恆溫鍛壓的試件觀察金相，導入Zener-Hollomon參數，並建立各參數條件下之金相資料庫。從模擬輥鍛及壓鍛製程之溫度及應變率的結果，求出鍛件上Ｚ值的分佈情形，並觀察鍛件上之金相，以Zener-Hollomon參數為依據，比對鍛件上的金相及實驗上的金相。本文證實藉由Zener-Hollomon參數比較模擬結果與實驗資料，可以預測出實際鍛件的金相分佈。

並列摘要

This paper presents a method to predict the microstructure of the final product by correlating the process simulation and the microstructure of the test specimens. To make sure that the parameters in the roll forging and upset forging processes simulations are correct, the results from heat transfer experiments, isothermal and non-isothermal ring compression and cylinder compression test~ were compared with the simulation results. By calculating the Zener-Hollomon parameters of the observed specimen, a microstructure database was created. To construct the rule for predicting microstructure, The simulated Zener-Hollomon parameter (Z value) distributions of the rolled and upset workpiece were computed from the temperature and strain rate distributions and mapped to the microstructure of the forged part. Comparing the microstructure-Z value map with the microstructures of the test specimens, the rule for predicting microstructure was constructed. This paper demonstrated that by comparing the simulated Zener-Hollomon parameters with those from experiment, the microstructure of the workpiece can be predicted.