【正文】 , H. Kulveitov225。nek, Properties of a NbVTi microalloyed steel influenced by cold rolling and annealing, Journal of Achievements in Materials and Manufacturing Engineering 20 (2006) 251254. [8] . JuarezIslas, R. Mendoza, J. Huante, M. Alanis, C. GonzalezRivera, Processing of ultra low carbon steels with mechanical properties adequate for automotive applications in the asannealed condition, Materials Science and Engineering A 276 (2000) 203209. [9] M. Kollerov225。 programmable mode: up to 10 programs, each of them can include up to 15 programmable blocks.Fig. 3 Vacuum annealing furnace 1812VAK. Testing of mechanical propertiesThe rolled and annealed samples underwent the tensile test at the room temperature and the Brinell hardness test. The obtained results – yield stress YS [MPa], tensile strength TS [MPa] and their ratio, hardness HB, as well as elongation A80 in %, were plotted in graphs in Figs. 79 as a function of cold deformation before annealing (. relative height reduction –???? [%]). The corresponding curves were fitted ?in a manual way“, without any exact mathematical rules.3. Metallographic analysis Sected samples for metallography were taken from central parts of rolled out products (in a perpendicular section, parallel with the rolling direction). For parison, microstructure was evaluated also with the initial, . noncold deformed sample. Microstructure after hot rolling was created almost exclusively by ferrite, with a minor occurrence of pearlite (Fig. 10). Very fine grains occurred (a number of ferritic grain size G = 1213). However, not all ferritic grains were equiaxed. Microstructure of the chosen annealed samples can be seen in Figs. 1122. All annealed samples have microstructure created by ferrite with low content of pearlite, extent of spheroidizing of which and region of occurrence depend on parameters of deformation and thermal processing .]jh4. Discussion of results Annealing mode 1 (see Figs. 4 and 7) is characterized by a slow increase of strength properties with rising deformation up to 40 %, which is caused by partial recrystallization of the hardened material. Thereafter a relative sudden drop of strength properties follows, which can be explained by the course of recrystallization (see micrographs in Figs. 1114). Elongation and YS/TS ratio are relatively slightly influenced by the previous cold deformation。?? max. vacuum 500 Pa。?? formability in conditions of longitudinal rolling。lcovna za studena, spol. s ., Czech Republicc .ivision of Materials Processing Technologies, Management and Computer Techniquesin Materials Science, Institute of Engineering Materials and Biomaterials, Silesian University of Technology, ul. Konarskiego 18a, 44100 Gliwice, Poland* Corresponding author: Email address: Received 。steck253。?ek, . Dobrza??ski, S. Rusz, P. Such225。rek, E. M237。塑料的強(qiáng)度和性質(zhì)實(shí)驗(yàn)得到特別的趨勢可能會(huì)用于對熱處理?xiàng)l件的優(yōu)化研究HLSA鋼QStE 420軋機(jī)在冷軋廠，反映了與給定的強(qiáng)度和鋼條塑料性能的關(guān)系的具體要求。由退火模式3取得力量屬性是最低的，與其他熱加工方式的比較。伸長率和YS /技術(shù)比是受相對輕微的前冷變形影響，它們比其他退火模式顯得微弱。非常細(xì)小的晶粒發(fā)生（1鐵素體晶粒尺寸的數(shù)字? = 1213）。 手動(dòng)模式：連續(xù)保持或可調(diào)范圍為1 4999分鐘（即超過了83小時(shí)，），可編程模式：最多10個(gè)方案，其中每一個(gè)最多可包含15個(gè)可編程塊。選擇參數(shù)：??有用的內(nèi)部尺寸450 200 200毫米。它被設(shè)計(jì)為即使是很窄，高強(qiáng)度冷軋窄鋼帶。因此，研究工作已經(jīng)建立，其中多數(shù)是青年工人和獨(dú)特的實(shí)驗(yàn)基地，不斷發(fā)展的多學(xué)科團(tuán)隊(duì)。在再結(jié)晶的時(shí)間完成必要的低溫條件下要高得多，以及所需的碳化物球化不能完成[4]。性能：1. 介紹：因?yàn)樵诮o定的條件下不發(fā)生重結(jié)晶，可以通過冷軋對產(chǎn)生的物質(zhì)結(jié)構(gòu)和性質(zhì)有顯著影響。研究所遇到的問題：通過實(shí)驗(yàn)，如何增加透射電鏡解釋的行為和沉淀物的作用.實(shí)際影響：通過實(shí)驗(yàn)獲得，在冷軋帶鋼軋機(jī)作用下，機(jī)械性能用來對熱的調(diào)查處理?xiàng)l件的優(yōu)化HLSA鋼。237。 b, M. R249。設(shè)計(jì)方法：在結(jié)合冷軋實(shí)驗(yàn)室中，帶鋼QStE420在真空爐進(jìn)行退火再結(jié)晶，進(jìn)行機(jī)械（尤其是拉伸）性能測試分析研究。, M. R??i?ka, L. ?237。Disarranged state Structure oriented by deformation圖 1. 插圖變形金屬質(zhì)感的起源[9]退火后的影響微觀性質(zhì)因素中，最重要的是：冷成形前物質(zhì)結(jié)構(gòu)的初步性質(zhì)，總冷軋，退火條件（溫度和時(shí)間）和冷卻速度[1,5,6,7,10,13,15,17，18，19]。再結(jié)晶與上述三種模式之一nealing低后申請的實(shí)驗(yàn)室真空電阻爐（圖3）和保護(hù)氣氛90％的氮?dú)浣M成的10％。對物理模型選定類型的基本優(yōu)點(diǎn)如下：
??高親和力真實(shí)情況。
??。??溫度變化速度沒有（收費(fèi)）：供暖爐80分鐘內(nèi)到1200℃，冷卻至約1200在400℃180分鐘。 切傷的金相樣品取自推出產(chǎn)品中垂直節(jié)（中部平行軋制方向）。4. 討論的結(jié)果對塑料性能觀察到的趨勢。據(jù)證實(shí)，由以前的冷軋和熱處理工藝參數(shù)的大小，得到以下一套適合它有可能影響對個(gè)體力學(xué)性能復(fù)雜趨勢的所有特殊曲線圖。?ek, M. Greger, R. Kocich, S. Rusz, I. Ju??i??ka, . Dobrza??ski, T. Ta??ski, Structure characteristics after rolling of magnesium alloys, Proceedings of the 13th Scientific International Conference “Achievements in Mechanical and Materials Engineering” AMME’2005, Gliwice ?? Wis??a, 2005, 8790.[4] V. D??dek, Heat Treatment of the Cold Rolled Steel Strips, SNTL, Praha, 1964 (in Czech). [5] J. GarciaVargas, . Hardwick, . Williams, Control of Mechanical Properties in Low Carbon Steel Using an Anneal – Strain – Anneal Method, Canadian Metallurgical Quarterly 19 (1980) 333343.[6] T. Gladman, The Physical Metallurgy of Microalloyed Steels, The Institute of Materials, London, 1997.[7] M. Jano?ec, I. Schindler, J. Pal225。dek, B. Po??ta, V. D??dek, Rolling, ALFA, Bratislava, 1991 (in Slovak and Czech). [10] P. Korczak, Influence of controlled rolling condition on microstructure and mecha