Bolt Load Loss Behavior of Magnesium Alloy AZ91D Bolted Joints Clamped with Aluminum Alloy A5056 Bolt
The bolt load loss behavior of AZ91D magnesium alloy bolted joints with a conventional SCM435 steel bolt and an A5056 aluminum bolt was investigated at elevated temperature.The A5056 bolt could reduce the bolt load loss compared to the SCM435 bolt due to smaller mismatch of thermal expansion between the bolt material and the plates.The mismatch of thermal expansion between bolt material and AZ91D plates was found to induce the compressive creep deformation in the AZ91D plates which performed as the main mechanism of bolt load loss.At higher tightening stress,the bolt load loss could be intensified by additional plastic deformation in bolt occurred during the test.Moreover,it is suggested that the plastic deformation could be reduced by decreasing the friction condition in the bolted joint.
Bolt load loss Magnesium alloy bolted joint Aluminum alloy bolt Creep deformation
Supamard Sujatanond Yukio Miyashita Shinji Hashimura Yoshiharu Mutoh Yuichi Otsuka
Nagaoka University of Technology,1603-1 Kamitomioka-machi,Nagaoka,940-2188,Japan Kurume National College of Technology,1-1-1 Komorino,Kurume,830-8555,Japan
国际会议
济南
英文
135-139
2012-12-29（万方平台首次上网日期，不代表论文的发表时间）