材料期刊网，材料期刊，材料类期刊，材料期刊投稿

The rolling treatment of steel-mushy QTi3.5-3.5 graphite composite was conducted under different relative reduction at room temperature. The effect of room-temperature rolling on interfacial mechanical property of steel-mushy QTi3.5-3.5 graphite composite was studied and the relationship between interfacial shear strength and relative reduction was established. The results show that, for steel-mushy QTi3.5-3.5 graphite composite, which consists of 1.2 mm-thick 08Al steel plate and 2.8 mm-thick QTi3.5-3.5 graphite layer, there is a nonlinear relationship between interfacial shear strength and relative reduction in graphite layer. When relative reduction is smaller than 1.1%, interfacial shear strength increases with increasing the relative reduction. When relative reduction is larger than 1.1%, interfacial shear strength decreases with increasing the relative reduction. When relative reduction is 1.1%, the largest interfacial shear strength of 145.2 MPa can be obtained.

关键词: Rolling , null , null , null

Effect of the width on AZ31 sheet rolling

Qingwei DAI

金属学报(英文版)

A pyramid sheet has been used in experiments and three-dimensional finite element simulation to study the edge cracks and effects of width on AZ31 sheet under rolling. Results show that the edge cracks of Mg sheet comply with the Normalized Crockroft & Latham theory. It can be predicted by D=-0.124+0.09X-0.008X², if D≥0, the edge cracks occur. The sheet shearing deformation at the edge brings about cracks. The strain rate changes periodically with different X. With initial width increases, the recrystallized grain size decreases. The finite element model has been validated by the experiment results.

关键词: Finite elements method , 镁合金 , 轧制 , 边裂

Formation of Copper Type Texture in Cold Rolled Aluminum Sheet

Weimin MAO

材料科学技术（英文）

The formation process of copper type rolling texture in f.c.c. metals was simulated based on a deformation model considering internal reaction stresses induced by the neighboring matrix as well as external shear stress induced by rollers. It is indicated that the external shear stress will reduce the brass type texture and increase the copper type texture obviously.

关键词: Texture , null , null , null

Slurry Preparation and Rolling of Semi-solid 60Si2Mn Spring Steel

Weimin MAO , Aimin ZHAO , Dong YUN , Leping ZHANG , Yonglin KANG

材料科学技术（英文）

The nondendritic semi-solid slurry preparation of 60Si2Mn spring steel has been studied in this paper. The experiments have shown that when stirred for 2 min on the test condition, the semi-solid slurry with 50%~60% fraction solid and spherical primary austenitic grains in the size of 100~300 μm can be obtained and is easy to be discharged from the bottom little hole of the stirring chamber. The nondendritic slurry of 60Si2Mn spring steel can be rolled into given plate form successfully, but the solid phase and liquid phase is easy to be separated in rolling process so that the solid primary austenite is concentrated in the center and the liquid is near the edge of the rolled plate. The rupture strength and elongation of the plate rolled only once with semi-solid slurry are lower than that of the traditionally repeated hot-rolled plate of 60Si2Mn spring steel.

关键词: 60Si2Mn , null , null , null

船板钢轧制过程模拟及组织性能预测

卫品官 , 项斯捷 , 沈斌 , 张恒华

上海金属

结合钢厂实际轧制工艺参数,应用DEFORM-3D软件对船板钢进行轧制模拟,模拟结果表明:实际生产工艺下的模拟温度场、轧制力与钢厂测量值均比较吻合,验证轧制模拟的可靠性及正确性,然后结合再结晶模型模拟了轧制过程中的显微组织演变规律,并预测了钢板的组织和力学性能,进而为钢厂轧制工艺参数的制定提供重要的参考价值.

关键词: 船板钢 , 轧制 , 组织性能 , 有限元模拟