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for nanocomposites. T6 heat treatment (solid solution at 530 °C for 2 h and aging at 175 °C for 6.5 h in this work) is also considered an effective method to strengthen nanocomposites [15-17]. CASATI et al [16... the driving force for aging. MIRJAVADI et al [17] prepared a graphene nanoplatelet-reinforced Al-10Zn-3.5Mg-2.5Cu nanocomposite by casting and hot extrusion, followed by T6 treatment. The nanocomposite......
treatment schedule to perform pre-aging for 5 min at 170 ℃ right after solution treatment. Key words: T4 temper; pre-aging; artificial aging hardenability; formability ... temper (natural aging after solution treatment) have high strength before stamping, and need to strengthen by paint bake cycle to satisfy the demand of in-service dent resistance after being......
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and copper precipitates; also, the secondary hardening could be the result of the transformation of austenite(formed in the aging treatment) to martensite. Differential scanning calorimetry of the steel...Aging behavior of a copper-bearing high-strength low-carbon steelBabak Shahriari,Reza Vafaei,Ehsan Mohammad Sharifi,Khosro FarmaneshDepartment of Materials Engineering, Malek Ashtar University......
; 文章编号:1672-7207(2012)02-0477-06 Effect of aging treatment on microstructure and corrosion properties of forged 7085 aluminum alloy CHEN Song-yi, CHEN Kang-hua, LIANG Xin, PENG Guo-sheng, CHEN Xue-hai (State Key Laboratory of Powder Metallurgy, Central South University, Changsha 410083, China) Abstract: Effect of aging treatment on microstructure......
Effect of aging on mechanical properties and localized corrosion behaviors of Al-Cu-Li alloy JIANG Na(蒋 呐)1, 2, LI Jin-feng(李劲风)1, ZHENG Zi-qiao(郑子樵)1, WEI Xiu-yu(魏修宇)1, LI Yan-fen(李艳芬)1 (1...: The effects of aging on mechanical properties, intergranular corrosion and exfoliation corrosion behaviors of a 2197 type Al-Li alloy were investigated, and the mechanisms were studied through microstructure......
superalloys with high content of refractory elements and optimal the aging heat treatment regimes, a single crystal superalloy containing 22 wt% refractory elements was investigated.Results show that for the experimental alloy, even the homogenization-solution heat treatment for 25 h cannot homogenize the alloying elements completely. During primary aging heat treatment, γ’ phase grows larger and turns......
T-250马氏体时效钢管径缩现象机理研究李成魁1,严彪1,祁红璋1,胡正飞1(1.上海市同济大学材料科学与工程学院上海市金属功能材料开发应用重点实验室)摘 要:研究马氏体时效钢管工艺过程的组织变化和径缩现象的原因,结果表明,材料经过旋压后,形貌发生明显的扭曲且边缘地区硬度增大.经固溶处理后,颗粒细化并且形貌恢复正常,残余应力消除.时效处理后,部分马氏体转变为奥氏体,并产生沉淀强化相.分析认为,马氏体时效钢的径缩现象主要因旋压后的热处理使形变残余应力消除,晶粒有序化和马氏体奥氏体相的转变所造成,沉淀析出相也有部分......
on tribological property of CoCrMo alloy processed by SLM and aging heat treatment. The results showed that very weak <110> texture along the building direction and microsegregation along...Microstructural features of biomedical cobalt–chromium–molybdenum(CoCrMo) alloy from powder bed fusion to aging heat treatmentHaoqing Li1,2,Ming Wang1,2,Xiaoying Fang1,21. Institute for Advanced......
. As the Cu-8.0Ni-1.8Si alloy is subjected to solution treatment at 970 ℃ for 4 h, cold rolling to 60% reduction, and then aging at 450 ℃ for 60 min, its properties are σb=1 050 MPa, σ0.2=786 MPa, δ=3.2... Thermomechanical treatment of super high strength Cu-8.0Ni-1.8Si alloy PAN Zhi-yong(潘志勇)1, 2, WANG Ming-pu(汪明朴)1, LI Zhou(李 周)1, XIAO Zhu(肖 柱)1, CHEN Chang(陈 畅)1 1. School of Materials Science......
