多道冷抽與熱處理製程對沃斯田鐵不鏽鋼纖維晶相與機械性質之影響

Crystalline Phase and Mechanical Property of Austenite Stainless Steel Fibersafter Multipath Cold Drawing and Heat Treatment Processes

石天威(T. W. Shyr) ； 黃詩茹(S. J. Huang)

《紡織綜合研究期刊》 25卷2期 (2015/04) Pp. 1-7

https://doi.org/10.6439/TTRJ.201504_25(2).0001

摘要

沃斯田鐵系不銹鋼纖維的微觀結構於抽線與熱處理製程過程中，有著明顯的變化，並改變其機械性質。本文以沃斯田鐵系316L不銹鋼纖維經二道集束常溫冷抽與800℃熱處理後，以X-ray繞射儀進行定性與定量分析，探討316L不銹鋼纖維之晶相結構變化，及其對機械性質之影響。結果顯示，316L不銹鋼纖維具γ-沃斯田鐵相和α'-麻田散鐵相。316L不銹鋼纖維於常溫冷抽後，產生應變誘導麻田散鐵相變，α'-麻田散鐵晶相比例增加，纖維比應力增加，延伸性降低；於熱處理後，α'-麻田散鐵晶相比例降低，纖維比應力降低，延伸性增加。因此，沃斯田鐵系不銹鋼纖維經熱處理後，有利於後道塑性變形加工。

關鍵字

316L不銹鋼纖維 ； 晶相結構 ； 應變誘導麻田散鐵相變

並列摘要

The mechanical property of austenite stainless steel fiber is affected by microstructure, which will be changed after drawing and heat treatment processes.In this study, the crystalline phase and mechanical property of 316L stainless steel fibers after two bundle drawing paths and heat treatmentat 800 °C were discussed. The identification and quantification of 316L stainless steel fibers were analyzed by an X-ray diffractometer. Results show that 316L stainless steel fiber has γ-austenite and α'-martensite phases. The strain-induced martensitic transformation took place after a drawing process at room temperature. The α'-martensite phase of the fiber was increased with an increase of specific strength and a decrease of elongation of the fiber after a drawing process; whereas the α'-martensite phase of the fiber was decreased with a decrease of specific strength and an increase of elongation of the fiber after heat treatment at 800 °C.It can be seen that the process of heat treatment benefits the plastic deformation of austenite stainless steel fiber.

並列關鍵字

316L stainless steel fiber ； crystalline phase ； strain-induced martensitic transformation