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    题名 作者 年代 出处 被引量
1层错能对TRIP/TWIP钢变形机制和力学性能的影响显示文摘综述了合金元素,温度对层错能的影响。介绍了层错能对高锰钢变形机制、组织和力学性能的影响,总结了高锰钢产生TWIP效应的条件,以及TWIP钢的强韧化机制。蔡李 苏钰 毛邈 李栓 雷佳乐 2015热加工工艺2015,44,6:8
2Enhanced tensile properties of a reversion annealed 6.5Mn-TRIP alloy via tailoring initial microstructure and cold rolling reduction显示文摘The feasibility of improving the overall performance of medium Mn steels was demonstrated via tailoring the initial microstructure and cold rolling reduction.The combined effects of cooling patterns after hot rolling(HR) and cold rolling(CR) reductions show:(1) as the cooling pattern varied from furnace cooling(FC) to oil quenching(OQ),the intercritically annealed microstructure was dramatically refined and the fraction of recrystallized ferrite dropped,regardless of CR reductions.This resulted in both high yield/ultimate tensile strengths(YS/UTS) but low total elongation to fracture(El);(2) as the CR reduction increased from 50% to 75%,the OQ-samples after annealing exhibited a more refined microstructure with relatively higher fractions of retained austenite and sub-structure,leading to higher YS and UTS but lower El; whereas the FC samples appeared to exhibit little difference in overall tensile properties in both cases.The differences in microstructural evolution with cooling patterns and CR reductions were explained by the calculated accumulated effective strain(εAES),which was considered to be related to degrees of recovery and recrystallization of the deformed martensite(α').The optimal tensile properties of ~1 GPa YS and ~40 GPa·% UTS×El were achieved in the OQ-50%CR annealed samples at 650?C for 1 h.This was quite beneficial to large-scale production of ultra-high strength steels,owing to its serious springback during heavy cold working.Minghui Cai Hongshou Huang Junhua Su Hua Ding Peter D.Hodgson 2018Journal of Materials Science & Technology2018,34,8:5
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