Corrigendum to “On the feasibility of friction spot joining in magnesium/fiber-reinforced polymer composite hybrid structures” [Mater. Sci. Eng. A 528 (2011) 3841–3848

Abstract

The authors regret that a number of errors were included in the second paragraph of Section 4.1 of their paper. For the readers onvenience, Section 4.1 of the paper has been reproduced below. The authors would like to apologise for any inconvenience caused. 4.1. Temperature field formation Fig. 5A presents selected results showing a typical temperature distribution in the clamping ring of a friction-spot joined PPSCF/AZ31 ingle-lap connection (1500 rpm, 0.25 mm, 8 s and 3 bar). Temperatures within the regions closer to the magnesium plate exhibited the ighest values varying between approximately 400 ◦C and 440 ◦C. Fig. 5B shows thermometric results for the same joint. Thermocouple T1, which is the nearest measurement point to the metal plastiizing volume (15.5 mm from the spot center and 1.5 mm deep in the metal partner), gives the highest temperature values, of about 275 ◦C, ollowed by thermocouples T2 and T4 (21.5 mm from the spot center and 1 mm into the metal partner and 8.5 mm from the spot center nd between partners, respectively), which registered temperatures around 170 ◦C and 225 ◦C, respectively. Thermocouples T3 and T5 resented the lowest maximum temperatures (120 ◦C and 90 ◦C, respectively). This is probably due to their distance from the heat source 32.5 mm from the spot center and 1 mm deep in the metal partner in the case of T3, whereas T5 was placed at the bottom of the PPS-CF laque, in the middle of the spot center). The peak temperatures measured represent 50–80% of the melting point of AZ31B, which is in accordance with temperatures measured uring friction stir welding with similar process conditions [18,34]. This is within the range of dynamic metallurgical transformations for Z31B [35]. In this way, microstructural changes are expected to occur during joining. The results of the temperature development for the PS-CF composite–AZ31 joints indicated that the process temperature is directly proportional to the energy input. Comparable to friction pot welding of metals, energy input is dictated by the welding parameters, such as rotational speed, joining time and tool plunge rate. A arametric study of the relationship between energy input, temperature and process by statistical analysis is forthcoming.