Lateral Angular Co-Extrusion: Geometrical and Mechanical Properties of Compound Profiles
Lateral Angular Co-Extrusion: Geometrical and Mechanical Properties of Compound Profiles
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DOI：
10.3390/met10091162
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发表时间：
2020-09-01
期刊：
影响因子：
2.9
通讯作者：
Klose, Christian
中科院分区：
文献类型：
--
作者：
Thuerer, Susanne Elisabeth;Peddinghaus, Julius;Klose, Christian
开发了一种新型共挤工艺生产同轴增强空心型材。使用该工艺生产了由铝合金EN AW-6082和表面硬化钢20 MnCr 5（AISI 5120）制成的混合空心型材，其可以通过随后的模锻锻造成混合轴承衬套。为了实现共挤，开发了一种模块化模具概念，其中由20 MnCr 5制成的钢管横向进给到模具中。该LACE（侧向角共挤出）工艺允许通过使用具有不同壁厚的钢管来改变增强物的体积分数，这使得能够生产具有14体积%或更大的增强物含量的复合型材。或34体积%。在推出测试中测定这些样品的粘合区域的剪切强度。此外，使用剪切压缩试验的混合型材的段的机械测试，以提供关于不同的粘结机制对复合区的强度的影响的信息。
A novel co-extrusion process for the production of coaxially reinforced hollow profiles has been developed. Using this process, hybrid hollow profiles made of the aluminum alloy EN AW-6082 and the case-hardening steel 20MnCr5 (AISI 5120) were produced, which can be forged into hybrid bearing bushings by subsequent die forging. For the purpose of co-extrusion, a modular tooling concept was developed where steel tubes made of 20MnCr5 are fed laterally into the tool. This LACE (lateral angular co-extrusion) process allows for a variation of the volume fraction of the reinforcement by using steel tubes with different wall thicknesses, which enabled the production of compound profiles having reinforcement contents of either 14 vol.% or 34 vol.%. The shear strength of the bonding area of these samples was determined in push-out tests. Additionally, mechanical testing of segments of the hybrid profiles using shear compression tests was employed to provide information about the influence of different bonding mechanisms on the strength of the composite zone.