高壓扭轉(zhuǎn)IF鋼壓縮階段的不均勻變形
發(fā)布時間:2018-07-17 05:33
【摘要】:觀察并研究了IF鋼高壓扭轉(zhuǎn)壓縮階段過程中的硬度及顯微組織不均勻分布特征,并利用ANSYS有限元分析軟件對實驗結(jié)果進(jìn)行模擬仿真驗證。結(jié)果表明IF鋼在高壓扭轉(zhuǎn)壓縮階段過程中的應(yīng)力、應(yīng)變及硬度分布是不均勻的:心部變形程度較小,硬度比較低;中間區(qū)域變形比較均勻,硬度也趨于一致;在邊緣區(qū)域,形變程度很大,從而硬度比較高;對于限定型高壓扭轉(zhuǎn),由于模具凹槽立壁對試樣變形的阻滯作用,變形量較小從而形成形變"死區(qū)"。模擬結(jié)果與硬度及顯微組織分布的實驗結(jié)果極為吻合,由此說明,正是由于壓縮階段試樣各部位不均勻變形導(dǎo)致了顯微組織、硬度的不均勻分布。
[Abstract]:The uneven distribution of hardness and microstructure during high pressure torsional compression of if steel was observed and studied. The experimental results were simulated and verified by ANSYS finite element analysis software. The results show that the distribution of stress, strain and hardness of if steel during high pressure torsional compression is not uniform: the center deformation degree is smaller, the hardness is lower, the middle zone deformation is more uniform, the hardness tends to be consistent, and in the edge region, the distribution of stress, strain and hardness is not uniform. The deformation degree is very large and the hardness is relatively high. For the limited high pressure torsion, the deformation "dead zone" is formed because of the block effect of the vertical wall of the die grooves on the specimen deformation. The simulation results are in good agreement with the experimental results of hardness and microstructure distribution, which shows that the uneven distribution of microstructures and hardness is due to the uneven deformation of various parts of the specimens during compression.
【作者單位】: 山東農(nóng)業(yè)大學(xué)機(jī)械與電子工程學(xué)院;山東農(nóng)業(yè)大學(xué)園藝科學(xué)與工程學(xué)院;韓國浦項工科大學(xué);
【基金】:山東省現(xiàn)代農(nóng)業(yè)產(chǎn)業(yè)技術(shù)體系果品產(chǎn)業(yè)創(chuàng)新團(tuán)隊資金(SDAIT-06-12) 山東省科技發(fā)展計劃項目(2014GGX102012) 國際熱核聚變實驗堆(ITER)計劃專項(2013GB110005)
【分類號】:TG142.1
本文編號:2129234
[Abstract]:The uneven distribution of hardness and microstructure during high pressure torsional compression of if steel was observed and studied. The experimental results were simulated and verified by ANSYS finite element analysis software. The results show that the distribution of stress, strain and hardness of if steel during high pressure torsional compression is not uniform: the center deformation degree is smaller, the hardness is lower, the middle zone deformation is more uniform, the hardness tends to be consistent, and in the edge region, the distribution of stress, strain and hardness is not uniform. The deformation degree is very large and the hardness is relatively high. For the limited high pressure torsion, the deformation "dead zone" is formed because of the block effect of the vertical wall of the die grooves on the specimen deformation. The simulation results are in good agreement with the experimental results of hardness and microstructure distribution, which shows that the uneven distribution of microstructures and hardness is due to the uneven deformation of various parts of the specimens during compression.
【作者單位】: 山東農(nóng)業(yè)大學(xué)機(jī)械與電子工程學(xué)院;山東農(nóng)業(yè)大學(xué)園藝科學(xué)與工程學(xué)院;韓國浦項工科大學(xué);
【基金】:山東省現(xiàn)代農(nóng)業(yè)產(chǎn)業(yè)技術(shù)體系果品產(chǎn)業(yè)創(chuàng)新團(tuán)隊資金(SDAIT-06-12) 山東省科技發(fā)展計劃項目(2014GGX102012) 國際熱核聚變實驗堆(ITER)計劃專項(2013GB110005)
【分類號】:TG142.1
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