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| 1 | Interface Migration between Martensite and Austenite during Quenching and Partitioning (Q&P) Process显示文摘Fe-0.2C-l.5Si-l.67Mn 钢受到熄灭并且划分(Q&P ) 进程,和在在提高的划分温度的马氏体和奥氏体之间的接口移植被观察。接口迁居在 constrainedparaequilibrium (用户终端设备) 被排除模型。基于“端点”由用户终端设备模型预言接口移植的热力学的条件被分析,也就是说,在在铁酸盐(martenisite ) 和奥氏体的铁的化学势的差别生产铁原子的驱动力从一个阶段移居到另外的阶段。另外,接口迁居罐头改变奥氏体部分;作为结果,在划分温度的奥氏体部分可能在通过接口移植熄灭温度比那高,但是这现象不能被用户终端设备模型解释。 | Ning ZHONG Xiaodong WANG Yonghua RONG Li WANG | 2006 | Journal of Materials Science & Technology2006，22，6： | 19 |
| 2 | Microstructural evolution and stress state related to mechanical properties of electron beam melted Ti-6Al-4V alloy modified by laser shock peening显示文摘This work characterizes microstructural evolutions of electron beam melted(EBM) Ti-6 Al-4 V alloy modified via laser shock peening(LSP).The depth stress distribution and tensile properties of EBM Ti-6 Al-4 V alloy were measured before and after LSP.The results indicate that microstructure consists of β phase with 7.2%±0.4% vol.% and balance α lamellar in EBM sample,and the α lamella was refined into nano-equiaxed grains and submicro-equiaxed grains after LSP.The dominant refinement mechanism is revealed during LSP.Stacking faults were found in the LSP-treated sample,and their corresponding planes were determined as(0001) basal plane,(1010) prismatic plane,and(1011) pyramidal plane obtained by high resolution transmission electron microscopy.The subgrains and high-angle grains formed during dynamic recrystallization were identified by selected area electron diffraction pattern.The LSP treatment produces a significantly residual compressive stress approximately-380 MPa with the depth of compressive stress layer reaching 450 μm.Strength and elongation of the EBM sample were significantly increased after LSP.The strength and ductility enhancements are attributed to compre s sive stress,grain refinement and grain gradient distribution of α phase. | Liang Lan Xinyuan Jin Shuang Gao Bo He Yonghua Rong | 2020 | Journal of Materials Science & Technology2020，47，15： | 11 |
| 3 | Deformation Temperature Dependence of Mechanical Properties and Microstructures for a Novel Quenching—Partitioning—Tempering Steel显示文摘The present investigation on a designed high strength Fe-0.25C-1.48Mn-1.20Si-1.51Ni-0.05Nb(wt%) steel treated by a novel quenching—partitioning—tempering(Q—P—T) process was focused on deformation temperature dependence of mechanical properties and microstructures.The results indicate that the Q—P—T steel deformed at various deformation temperatures from -70 to 300℃exhibits superior mechanical properties due to excellent thermal stability of retained austenite.The microstructural characterization by transmission electron microscopy(TEM) reveals that the high strength of the Q—P-T steel results from dislocation-type martensite laths and fcc NbC carbides or/and hcpε-carbides precipitated dispersively in martensite matrix,while excellent ductility is attributed to the significant transformation induced plasticity (TRIP) effect produced by considerable amount of retained austenite.The relationship between mechanical properties and microstructures at different deformation temperatures was clarified. | Ying Wang Zhenghong Guo Nailu Chen Yonghua Rong | 2013 | Journal of Materials Science & Technology2013，29，5： | 5 |
| 4 | Dynamic Compression Behavior and Microstructure of a Novel Low-Carbon Quenching-Partitioning-Tempering Steel显示文摘A 0.2C-1.5Mn-1.5Si-0.6Cr-0.05Nb(wt%) steel is treated respectively by novel quenching-partitioning-tempering(Q-P-T) process and traditional quenching and tempering(Q&T) process for comparison. X-ray diffraction analysis indicates that Q-P-T steel has about 10% retained austenite, but Q&T steel hardly has one. With the increase of compression strain rate from 7 9 102 to 5 9 103s-1, the flow stress of Q-P-T steel increases, which demonstrates the positive strain rate effect, but does not exist in Q&T steel. The characterization of scanning electron microscopy indicates that a large number of long, straight martensite laths in Q-P-T steel will bend or be destroyed by large compressive strain of 35%at 5 9 103s-1. However, relative small compressive strain of about 5% at 7 9 102s-1almost does not have any effect on the original lath morphology. The characterization of transmission electron microscopy further reveals the origin of the positive strain rate effect and the microstructural evolution during dynamic compressive deformation. | Qingguo Hao Ying Wang Xiaoshuai Jia Xunwei Zuo Nailu Chen Yonghua Rong | 2014 | Acta Metallurgica Sinica(English Letters)2014，27，3： | 5 |
| 5 | Orientation Relationships between Ferrite and Cementite by Edge-to-edge Matching Principle显示文摘The crystallographic features of pearlite were investigated by experiments and edge-to-edge matching principle. Two new orientation relationships between ferrite and cementite were determinated by selected area electron diffraction and then explained by our modified edge-to-edge matching method. The consistence of the experimental results with theoretical prediction confirms the practicability of the modified edge-to-edge matching model. | Ning Zhong Xiaodong Wang Zhenghong Guo Yonghua Rong | 2011 | Journal of Materials Science & Technology2011，27，5： | 3 |
| 6 | A new effect of retained austenite on ductility enhancement in high-strength quenching–partitioning–tempering martensitic steel显示文摘 | Ke Zhang Meihan Zhang Zhenghong Guo Nailu Chen Yonghua Rong | 2011 | Materials Science & Engineering A2011，，29： | 3 |
| 7 | A new effect of retained austenite on ductility enhancement in high strength bainitic steel显示文摘 | Ying Wang Ke Zhang Zhenghong Guo Nailu Chen Yonghua Rong | 2012 | Materials Science & Engineering A2012，，： | 1 |
| 8 | Characterization of γ′-Fe4N Precipitatesin a Compound Layer Formed by Austenitic Nitrocarburizing Treatment显示文摘 | Wang Yongrui Rong Yonghua Chen Xingkang | 1995 | Mater Charact1995，34，： | 1 |
| 9 | A new effect of retained austenite on ductility enhancement in high strength bainitic steel显示文摘 | Ying Wang Ke Zhang Zhenghong Guo Nailu Chen Yonghua Rong | 2012 | Materials Science & Engineering A2012，，： | 1 |
| 10 | The relationship of the volume fraction of martensite vs plastic strain in an Fe-Mn-Si-Cr-N shape memory alloy显示文摘 | Meng Qingping Rong Yonghua Chen Shipu | 2001 | Mater Lett2001，50，： | 1 |
| 11 | On the determination of shear angle in martensitic transformations显示文摘 | Chen Zi Zheng Hui Rong Yonghua | 2007 | Materials Science and Engineering A2007，457，： | 1 |
| 12 | TEM Investigation of the As-quenched Compound Layer Formed by Austenitic Nitrocarburizing显示文摘 | Yonghua Rong Yongrui Wang Xingkang Chen | 1998 | Charact1998，41，1： | 1 |
| 13 | Martensite and its reverse transformation in nanocrystalline bulk Co显示文摘 | Chunsheng Wen Baoxu Huang Zi Chen Yonghua Rong | 2006 | Materials Science & Engineering A2006，，： | 1 |
| 14 | Corrosion behavior,antibacterial ability,and osteogenic activity of Zn-incorporated Ni-Ti-O nanopore layers on NiTi alloy显示文摘Development of bone fixation devices with excellent corrosion resistance,antibacterial ability,and osteogenic activity is critical for promoting fracture healing.In this study,Zn-incorporated nanopore(NP)layers were prepared on the NiTi alloy through anodization and hydrothermal treatment.Results show that Zn can be evenly incorporated into the NP layers in the form of ZnTiO_(2).The Zn-incorporated samples exhibit good corrosion resistance and significantly reduce Ni^(2+)release.Meanwhile,the samples can continuously release Zn^(2+),which is responsible for excellent long-term antibacterial ability.Furthermore,the synergetic effect of Zn^(2+) release and nanoporous structure of the NP layers endues the NiTi alloy excellent osteogenic activity,as verified by upregulated alkaline phosphatase activity,secretion of type I collagen,and extracellular matrix mineralization.Therefore,Zn-incorporated Ni-Ti-O NP layers have great potential as biomedical coatings of NiTi-based implant materials. | Yonghua Sun Yuyu Zhao He Zhang Youjie Rong Runhua Yao Yi Zhang Xiaohong Yao Ruiqiang Hang | 2022 | Journal of Materials Science & Technology2022，，2： | 1 |
| 15 | Transcriptomics-based identification and characterization of genes related to sugar metabolism in‘Hongshuijing’pitaya显示文摘Sugar composition not only affects fruit flavor but is also an important determinant of fruit taste and consumer preference.In this study,changes in the sugar content and sugar-metabolizing enzymes were investigated from different sections of various fruit development phases of‘Hongshuijing’pitaya(Hylocereus monacanthus).Genes related to sugar metabolism were also screened by transcriptome analyses.The results indicated that glucose was the major sugar in mature pitaya fruit,and was mainly regulated by vacuolar acid invertase(VAI)and sucrose synthase(SS)(degradative direction).Sugar accumulation varied in pulp between different sections of the pitaya fruit.VAI,neutral invertase(NI)and SS(degradative direction)are crucial enzymes for sugar accumulation in pitaya.The expression of 17 genes related to sucrose metabolism obtained from seven databases[NCBI non-redundant protein database(Nr),NCBI non-redundant nucleotide sequence database(Nt),EuKaryotic Orthologous Groups(KOG),The Protein Families(Pfam),Kyoto Encyclopedia of Genes and Genomes(KEGG),Swiss-prot,and Gene Ontology(GO)]were analyzed in different pitaya pulp sections.HpVAI1 had the highest relative expression level on the 29th day after pollination(DAP).Positive correlations were found between HpVAI1 expression and VAI activity;HpNI4 and NI activity;HpSS2,HpSS5,and SS activity(synthetic direction),indicating that HpVAI1,HpNI4,and HpSS2 and HpSS5 were involved in the regulation of VAI,NI,and SS(synthetic direction),respectively.HpVAI1 and HpNI4 regulated sucrose degradation and the accumulation of glucose and fructose,while HpSS2 and HpSS5 regulated sucrose synthesis.These results suggest that HpVAI1 plays a key role in sugar metabolism during fruit development of‘Hongshuijing’pitaya.The results of this study provide new information about sugar metabolism in pitaya fruit that could help improve fruit quality and the breeding of new cultivars. | Zhike Zhang Yemiao Xing Muthusamy Ramakrishnan Canbin Chen Fangfang Xie Qingzhu Hua Jianye Chen Rong Zhang Jietang Zhao Guibing Hu Yonghua Qin | 2022 | Horticultural Plant Journal2022，8，4： | 1 |
| 16 | Mechanical and Transformation Behaviors of a C-Mn-Si-Al-Cr TRIP Steel under Stress显示文摘导致的粘性(旅行) 钢高联合的转变力量和优秀韧性,使他们在汽车的工业在碰撞相关的部分适合申请。然而,在常规旅行钢的高 Si 内容将在热卷的长带上产生表面缺点,它是困难的在连续电镀处理线。为了解决上述问题,有代替 Si 的多数的艾尔的增加的 TRIP 钢被设计。在现在的纸,在 C-Mn-Si-Al-Cr 旅行钢的各种各样的阶段的体积部分被 metallographic 检查和 X 光检查衍射分析决定,并且 multi-phasemicrostructures 基于他们的高度差别用一台原子力量显微镜被描绘。张力的测试在从 -40 deg C 到 90 degC 的不同温度被执行。结果证明在现在的旅行钢的转变温度 M_s^( 西格马) 不能由于它保留的奥氏体的更低的体积部分是坚定的,与常规旅行钢不同。当在不同温度的收益应力和张力的强度比常规旅行钢的那些高时,它被归因于 Cr 的增加。以便在全部的延伸上评估马氏体的转变的效果,没有在液体氮熄灭获得的保留的奥氏体的样品在张力的测试下面被执行。Theresults 显示包含 9% 保留的奥氏体的原来的样品的延伸比在液体氮熄灭的样品的高是大约 20% ,它证明保留的奥氏体在改进 TRIP 钢的延伸起一个重要作用。 | Xiaodong WANG Baoxu HUANG Yonghua RONG Li WANG | 2006 | Journal of Materials Science & Technology2006，22，5： | 1 |
| 17 | Deformation and Dislocation Structure in L1_2 Titanium Trialuminide Alloys显示文摘The deformation behaviour and the nature of dislocations of the Al3Ti-base L12 alloya modified with Fe and Mn etc, were investigated. The results show that the deformation and fracture character istics are closely related to the alloy compositions. The effect of hot-working process on the room tem perature ductility is remarkable, not only resulting in an appreciable improvement of compressive properties but also showing a 0.28% plastic strain in tensile test. The SISF dissociation of a < 110>dislocations on {111} planes was found at room temperature. The determined dissociation scheme is consistent with the mechanical behaviour of these alloys in the lower temperature region. | Gengxiang HU Shipu CHEN Xiaohua WU Yonghua RONG and Xiaofu CHEN(Dept. of Materials Science, Shanghai Jiao Tong University, Shanghai, 200030, China) | 1994 | Journal of Materials Science & Technology1994，10，6： | 0 |
| 18 | Using silk-derived magnetic carbon nanocomposites as highly efficient Nanozymes and electromagnetic absorbing agents显示文摘Functional carbon nanomaterials have become the stars of many active research fields,such as electronics,energy,catalysis,imaging,sensing and biomedicine.Herein,a facile and one-pot strategy for generating ferromagnetic nanoparticles loaded on N-doped carbon nanosheets(Fe-N-CNS)is presented by salt-assisted high-temperature carbonization of natural silk proteins.Due to their graphitic structures,N-doping and ferromagnetic nanoparticles(FeN_(x),FeO_(y),FeC_(z)),the silk-derived Fe-N-CNS can act as excellent mimics of both peroxidase and oxidase.Benefiting from the combined character of the graphene-like structures and enzyme-like activities,Fe-N-CNS can be further applied to highly efficient dye removal via synergistic adsorption and degradation.Meanwhile,the as-prepared Fe-N-CNS with intrinsic magnetism and electrical conductivity can also serve as an efficient electromagnetic wave absorption agent.The broadest effective absorption bandwidth(EAB)of as-obtained absorbing material yields a 6.73 GHz with 1 mm thickness,with a maximum reflection loss of-37.33 dB(11.41 GHz).The EAB can cover2~18 GHz with a tunable absorber thickness from 1.0 mm to 5.0 mm.Collectively,Fe-N-CNS,as a dualfunctional material,can tackle the aggravating environmental pollution issues of both dyes and electromagnetic waves. | Hao Wang Xianhui Zhang Yonghua Tang Weifeng Rong Jiachen Zhao Chaoyu Fan Zhisen Zhang Zhijun Sun Yun Yang Youhui Lin | 2023 | Chinese Chemical Letters2023，34，9： | 0 |
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