TY - CHAP

T1 - Approaching bolt load retention behaviour of AS41 through compliance and creep deformation

AU - Anopuo, Okechukwu

AU - Huang, Yuanding

AU - Hort, Norbert

AU - Dieringa, Hajo

AU - Kainer, Karl Ulrich

PY - 2010

Y1 - 2010

N2 - Bolt load retention (BLR) test is a practical way to quantify the degree of fastener clamp load retained at bolted joint in an engineering assembly. This is especially important for automotive power train Applications working at elevated temperatures above 100 °C. BLR behaviour, creep and microstructure are important to achieve more heat resistant Mg-alloys for automotive power train app.lication. In this study, these methods of investigation were used to analyse the elevated temperature properties of permanent mould cast AS41. Investigations were carried out at temperatures between 100 °C and 175°C and stresses of 40-90 MPa. Stress exponent values of ∼ 2 at low stress regions of 40 and 55 MPa, and between 4-6 at high stress regions of 70 and 90 MPa suggest grain boundary sliding and dislocation climb as deformation mechanism during creep. The prediction of the BLR behaviour and experimental results are in good agreement.

AB - Bolt load retention (BLR) test is a practical way to quantify the degree of fastener clamp load retained at bolted joint in an engineering assembly. This is especially important for automotive power train Applications working at elevated temperatures above 100 °C. BLR behaviour, creep and microstructure are important to achieve more heat resistant Mg-alloys for automotive power train app.lication. In this study, these methods of investigation were used to analyse the elevated temperature properties of permanent mould cast AS41. Investigations were carried out at temperatures between 100 °C and 175°C and stresses of 40-90 MPa. Stress exponent values of ∼ 2 at low stress regions of 40 and 55 MPa, and between 4-6 at high stress regions of 70 and 90 MPa suggest grain boundary sliding and dislocation climb as deformation mechanism during creep. The prediction of the BLR behaviour and experimental results are in good agreement.

KW - Bolt load

KW - Creep

KW - Microstructure

KW - Engineering

UR - http://www.scopus.com/inward/record.url?scp=77952351347&partnerID=8YFLogxK

M3 - Article in conference proceedings

AN - SCOPUS:77952351347

SN - 9780873397469

T3 - Magnesium Technology

SP - 215

EP - 220

BT - Magnesium Technology 2010 - Held During TMS 2010 Annual Meeting and Exhibition

A2 - Agnew, Sean R.

A2 - Neelameggham, Neale R.

A2 - Nyberg, Eric A

A2 - Sillekens, Wim H.

PB - John Wiley & Sons Inc.

T2 - Magnesium Technology 2010 - TMS 2010 Annual Meeting and Exhibition

Y2 - 14 February 2010 through 18 February 2010

ER -